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<!--XBRL Document Created with Wdesk from Workiva-->
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<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_moln_IndustryBenchmarkDiscountRatesPeriod_cfaaf6d2-87ba-4e0d-936f-d2167dd8e3a9_terseLabel_en-US" xlink:label="lab_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Discount rates based on industry benchmark, period</link:label>
    <link:label id="lab_moln_IndustryBenchmarkDiscountRatesPeriod_label_en-US" xlink:label="lab_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Industry Benchmark, Discount Rates, Period</link:label>
    <link:label id="lab_moln_IndustryBenchmarkDiscountRatesPeriod_documentation_en-US" xlink:label="lab_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Industry Benchmark, Discount Rates, Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:href="moln-20221231.xsd#moln_IndustryBenchmarkDiscountRatesPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:to="lab_moln_IndustryBenchmarkDiscountRatesPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CounterpartiesAxis_1bb20c8d-8103-4383-aad2-0e195aeb7e36_terseLabel_en-US" xlink:label="lab_ifrs-full_CounterpartiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Counterparties [axis]</link:label>
    <link:label id="lab_ifrs-full_CounterpartiesAxis_label_en-US" xlink:label="lab_ifrs-full_CounterpartiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Counterparties [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CounterpartiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CounterpartiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CounterpartiesAxis" xlink:to="lab_ifrs-full_CounterpartiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_f7364186-4f33-4711-b624-756799372b53_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of classes of share capital [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of classes of share capital [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:to="lab_ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems_8551ccf4-7f8b-4b84-86c6-ae7b4b7c1381_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Trade And Other Receivables [Line Items]</link:label>
    <link:label id="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems_label_en-US" xlink:label="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Trade And Other Receivables [Line Items]</link:label>
    <link:label id="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems_documentation_en-US" xlink:label="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Trade And Other Receivables [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:href="moln-20221231.xsd#moln_DisclosureOfTradeAndOtherReceivablesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:to="lab_moln_DisclosureOfTradeAndOtherReceivablesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity_9b4572f6-2956-4aac-993f-8aab6a468f3f_terseLabel_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issued in relation to June 2021 IPO</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity_label_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued In Relation To Initial Public Offering, Equity</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity_documentation_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued In Relation To Initial Public Offering, Equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:href="moln-20221231.xsd#moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:to="lab_moln_NumberOfSharesIssuedInRelationToInitialPublicOfferingEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncomeTaxExpense_47a6e73b-7ad8-4ab6-a438-827c90ac923a_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Income tax</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncomeTaxExpense_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for income tax expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:to="lab_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_9263e40f-7708-43e5-8617-e694aaac65de_terseLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Fair value of plan assets at December 31</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_1e586d5f-9a15-449f-9fa4-57f6f9ecd918_totalLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total plan assets at fair value at December 31</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_label_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Plan assets, at fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PlanAssetsAtFairValue" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PlanAssetsAtFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PlanAssetsAtFairValue" xlink:to="lab_ifrs-full_PlanAssetsAtFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_GBP_53592257-57f6-42e0-b699-a24801a55370_terseLabel_en-US" xlink:label="lab_currency_GBP" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">GBP</link:label>
    <link:label id="lab_currency_GBP_label_en-US" xlink:label="lab_currency_GBP" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">United Kingdom, Pounds</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_GBP" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_GBP"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_GBP" xlink:to="lab_currency_GBP" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis_c06f7934-9600-4b36-94dd-f152fe2cbced_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of financial liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of financial liabilities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:to="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressPostalZipCode_fb77e42d-c391-45aa-907c-2d7d31168e1c_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:label id="lab_dei_EntityAddressPostalZipCode_label_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressPostalZipCode" xlink:to="lab_dei_EntityAddressPostalZipCode" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems_aa4ded0f-07c3-4361-a664-3b69ec364267_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about intangible assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about intangible assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:to="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_NovartisMember_acd25f25-7d3e-439f-81d4-28bf2e030909_terseLabel_en-US" xlink:label="lab_moln_NovartisMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Novartis</link:label>
    <link:label id="lab_moln_NovartisMember_label_en-US" xlink:label="lab_moln_NovartisMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Novartis [Member]</link:label>
    <link:label id="lab_moln_NovartisMember_documentation_en-US" xlink:label="lab_moln_NovartisMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Novartis</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_NovartisMember" xlink:href="moln-20221231.xsd#moln_NovartisMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_NovartisMember" xlink:to="lab_moln_NovartisMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_RoyaltyPayable_d811b1fd-ba1b-41e0-897b-f27c3977da3c_terseLabel_en-US" xlink:label="lab_moln_RoyaltyPayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty, payable</link:label>
    <link:label id="lab_moln_RoyaltyPayable_label_en-US" xlink:label="lab_moln_RoyaltyPayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty, Payable</link:label>
    <link:label id="lab_moln_RoyaltyPayable_documentation_en-US" xlink:label="lab_moln_RoyaltyPayable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty, Payable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_RoyaltyPayable" xlink:href="moln-20221231.xsd#moln_RoyaltyPayable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_RoyaltyPayable" xlink:to="lab_moln_RoyaltyPayable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TreasuryShares_7cc20943-e825-4e4c-83e8-5fca5ef5b9d2_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_TreasuryShares" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Treasury share reserve</link:label>
    <link:label id="lab_ifrs-full_TreasuryShares_label_en-US" xlink:label="lab_ifrs-full_TreasuryShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Treasury shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasuryShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasuryShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TreasuryShares" xlink:to="lab_ifrs-full_TreasuryShares" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_ExpiringIn2028Member_5a3e88d8-5622-46cb-9b40-ce8db038847f_terseLabel_en-US" xlink:label="lab_moln_ExpiringIn2028Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">2028</link:label>
    <link:label id="lab_moln_ExpiringIn2028Member_label_en-US" xlink:label="lab_moln_ExpiringIn2028Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expiring In 2028 [Member]</link:label>
    <link:label id="lab_moln_ExpiringIn2028Member_documentation_en-US" xlink:label="lab_moln_ExpiringIn2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expiring In 2028</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ExpiringIn2028Member" xlink:href="moln-20221231.xsd#moln_ExpiringIn2028Member"/>
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    <link:label id="lab_srt_RangeMember_label_en-US" xlink:label="lab_srt_RangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Statistical Measurement [Domain]</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromAdministrationCostsNotReflectedInReturnOnPlanAssets_3c75c6f2-acdc-40e0-9485-ae6219ccce5a_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromAdministrationCostsNotReflectedInReturnOnPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Administrative cost (excl. cost for managing plan assets)</link:label>
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    <link:label id="lab_ifrs-full_CarryingAmountMember_ca568797-762d-4707-8b26-a489bcb32f3a_terseLabel_en-US" xlink:label="lab_ifrs-full_CarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Carrying amount [member]</link:label>
    <link:label id="lab_ifrs-full_CarryingAmountMember_label_en-US" xlink:label="lab_ifrs-full_CarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Carrying amount [member]</link:label>
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    <link:label id="lab_moln_FinancialRiskManagementAbstract_9577863f-d522-402f-8b1f-09faf29c1c74_terseLabel_en-US" xlink:label="lab_moln_FinancialRiskManagementAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Risk Management [Abstract]</link:label>
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    <link:label id="lab_moln_FinancialRiskManagementAbstract_documentation_en-US" xlink:label="lab_moln_FinancialRiskManagementAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Risk Management [Abstract]</link:label>
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    <link:label id="lab_moln_TaxLossCarryforwardsExpirationPeriod_b3ccb57e-9f58-43d7-855d-f37e12ea0a82_terseLabel_en-US" xlink:label="lab_moln_TaxLossCarryforwardsExpirationPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Tax loss carryforwards, expiration period</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets_fd99469d-912e-4d8c-a4bf-7c66862046c8_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Change in other current assets</link:label>
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    <link:label id="lab_ifrs-full_DepreciationRightofuseAssets_3ff099ca-4b16-4d7c-bacc-407564a38f6a_terseLabel_en-US" xlink:label="lab_ifrs-full_DepreciationRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Depreciation on right-of-use assets</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfIncomeTaxExplanatory_442fba5a-3dfa-4a8d-aa7a-dc3ce7060195_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Taxes</link:label>
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    <link:label id="lab_moln_ActuarialAssumptionsPossibleIncreaseDecreaseInLongevityForMostOfTheAgeCategories_1ff3b027-7ccc-4df0-95f3-0ed2fe62e4bf_terseLabel_en-US" xlink:label="lab_moln_ActuarialAssumptionsPossibleIncreaseDecreaseInLongevityForMostOfTheAgeCategories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial assumptions, possible increase (decrease) in longevity for most of the age categories</link:label>
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    <link:label id="lab_ifrs-full_FinanceIncomeCost_f41b2011-8cdd-49d6-b77a-556afebb6838_totalLabel_en-US" xlink:label="lab_ifrs-full_FinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net finance result</link:label>
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    <link:label id="lab_moln_ExercisePriceRangeThreeMember_26561d90-0f7e-4c6e-b26d-cb69cd0a1c5c_terseLabel_en-US" xlink:label="lab_moln_ExercisePriceRangeThreeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exercise price, range three</link:label>
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    <link:label id="lab_moln_NumberOfOperatingSegments_f25969c4-7714-4769-a294-c49bafa50846_terseLabel_en-US" xlink:label="lab_moln_NumberOfOperatingSegments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of operating segments</link:label>
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    <link:label id="lab_moln_NumberOfOperatingSegments_documentation_en-US" xlink:label="lab_moln_NumberOfOperatingSegments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Operating Segments</link:label>
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    <link:label id="lab_ifrs-full_EarningsPerShareAbstract_label_en-US" xlink:label="lab_ifrs-full_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Earnings per share [abstract]</link:label>
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    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_a8750391-8bba-4c15-b857-f068cdbf0314_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Property, plant and equipment</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfCreditRiskExposureLineItems_dc8ce665-2b8d-4b5b-9dd7-2b64b3787a6e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfCreditRiskExposureLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of credit risk exposure [line items]</link:label>
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    <link:label id="lab_ifrs-full_GeographicalAreasMember_c2cd9ad9-fe84-4b58-9109-634fea4f0053_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Geographical areas [member]</link:label>
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    <link:label id="lab_moln_AmgenIncMember_c7bf0d9e-5ec3-498f-abfe-0b5d905d30fc_terseLabel_en-US" xlink:label="lab_moln_AmgenIncMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Amgen</link:label>
    <link:label id="lab_moln_AmgenIncMember_label_en-US" xlink:label="lab_moln_AmgenIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Amgen, Inc [Member]</link:label>
    <link:label id="lab_moln_AmgenIncMember_documentation_en-US" xlink:label="lab_moln_AmgenIncMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Amgen, Inc</link:label>
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    <link:label id="lab_ifrs-full_SellingGeneralAndAdministrativeExpense_ef695a63-bbbb-4fd4-99b7-e2d318574b3f_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Selling, general and administrative expenses</link:label>
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    <link:label id="lab_ifrs-full_SellingGeneralAndAdministrativeExpense_label_en-US" xlink:label="lab_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Selling, general and administrative expense</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory_8c661f84-1b03-4d8a-9b2c-cec324ee7080_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Financial Liabilities at Amortized Cost</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of financial liabilities [text block]</link:label>
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    <link:label id="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ef332e8d-c41f-4960-824d-b203d26272e4_terseLabel_en-US" xlink:label="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]</link:label>
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    <link:label id="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset_2139d7c3-0c9c-4f41-9617-0dd204e1f456_terseLabel_en-US" xlink:label="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Past service cost</link:label>
    <link:label id="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase (decrease) in net defined benefit liability (asset) resulting from past service cost</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory_a737ee20-4e02-44c0-b834-bde0df5197ac_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intangible assets</link:label>
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    <link:label id="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_50eb0d8a-351b-4298-82ed-3735ce6e7a9a_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share options exercisable (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share options exercisable in share-based payment arrangement</link:label>
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    <link:label id="lab_dei_DocumentInformationLineItems_e4dd3fe1-466f-4128-b7c5-0083c74ba89a_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Information [Line Items]</link:label>
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    <link:label id="lab_moln_FinancialInstrumentsAbstract_880e3a47-b02a-49af-ba64-806386d39e60_terseLabel_en-US" xlink:label="lab_moln_FinancialInstrumentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Instruments [Abstract]</link:label>
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    <link:label id="lab_moln_FinancialInstrumentsAbstract_documentation_en-US" xlink:label="lab_moln_FinancialInstrumentsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Instruments [Abstract]</link:label>
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    <link:label id="lab_ifrs-full_ActuarialAssumptionOfDiscountRates_b49f310a-4d4a-4496-acfc-55f173ee08c2_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfDiscountRates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Discount rate</link:label>
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    <link:label id="lab_moln_ResearchAndDevelopmentExpenseMember_a6c8a729-8e5f-4147-86cc-f7b4c4fc05ea_terseLabel_en-US" xlink:label="lab_moln_ResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Research and development expenses</link:label>
    <link:label id="lab_moln_ResearchAndDevelopmentExpenseMember_label_en-US" xlink:label="lab_moln_ResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Research And Development Expense [Member]</link:label>
    <link:label id="lab_moln_ResearchAndDevelopmentExpenseMember_documentation_en-US" xlink:label="lab_moln_ResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Research And Development Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ResearchAndDevelopmentExpenseMember" xlink:href="moln-20221231.xsd#moln_ResearchAndDevelopmentExpenseMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ResearchAndDevelopmentExpenseMember" xlink:to="lab_moln_ResearchAndDevelopmentExpenseMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RelatedPartyTransactionsAbstract_64a0ecf7-c195-48a5-899d-6fd4fba7d868_terseLabel_en-US" xlink:label="lab_ifrs-full_RelatedPartyTransactionsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Related party transactions [abstract]</link:label>
    <link:label id="lab_ifrs-full_RelatedPartyTransactionsAbstract_label_en-US" xlink:label="lab_ifrs-full_RelatedPartyTransactionsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Related party transactions [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RelatedPartyTransactionsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RelatedPartyTransactionsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RelatedPartyTransactionsAbstract" xlink:to="lab_ifrs-full_RelatedPartyTransactionsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromIssuingShares_e679947d-c14c-4459-bd99-573354c5d677_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromIssuingShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Proceeds from issuance of new shares, net of transaction costs</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromIssuingShares_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromIssuingShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Proceeds from issuing shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromIssuingShares" xlink:to="lab_ifrs-full_ProceedsFromIssuingShares" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_8f9181a8-7a00-4fa6-95b0-424362b5be52_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of PSU and RSU exercised (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of other equity instruments exercised or vested in share-based payment arrangement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:to="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfShareCapitalAxis_e3d016d3-8b19-4ae7-b6a7-254790c0b41e_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of share capital [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfShareCapitalAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of share capital [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfShareCapitalAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfShareCapitalAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfShareCapitalAxis" xlink:to="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeStatementAbstract_label_en-US" xlink:label="lab_ifrs-full_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Profit or loss [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeStatementAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeStatementAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeStatementAbstract" xlink:to="lab_ifrs-full_IncomeStatementAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_UniversityOfZurichMember_ef683885-dc5d-4aee-9f5e-3e8068952ccb_terseLabel_en-US" xlink:label="lab_moln_UniversityOfZurichMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">University of Zurich</link:label>
    <link:label id="lab_moln_UniversityOfZurichMember_label_en-US" xlink:label="lab_moln_UniversityOfZurichMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">University Of Zurich [Member]</link:label>
    <link:label id="lab_moln_UniversityOfZurichMember_documentation_en-US" xlink:label="lab_moln_UniversityOfZurichMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">University Of Zurich</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_UniversityOfZurichMember" xlink:href="moln-20221231.xsd#moln_UniversityOfZurichMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_UniversityOfZurichMember" xlink:to="lab_moln_UniversityOfZurichMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_5fe4ca6a-8e64-4bb2-9cd2-a4342fcdde79_totalLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability at December 31</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_7bc08e0b-ce11-44a5-86eb-1bed3195d4a5_periodStartLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability at January 1</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_9f954c26-54df-47cc-a357-4dcac7056d11_periodEndLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability at December 31</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_5a75dac3-9a5f-4388-93b7-df66022c6e17_negatedPeriodStartLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Fair value of plan assets at January 1</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_c99aa0c0-1f30-41f6-a31b-7f9476976d89_negatedPeriodEndLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Fair value of plan assets at December 31</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_5d3fffdd-ad1a-4b98-ab71-2169ac62e1fa_terseLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability (asset)</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_label_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability (asset)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LiabilityAssetOfDefinedBenefitPlans"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:to="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_2b0bda62-ee21-4050-8731-d1261092d0e3_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other receivables</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other current receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCurrentReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentReceivables" xlink:to="lab_ifrs-full_OtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset_b65ba8a8-72b1-48f2-af1a-fa673c3f3434_negatedLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contributions by plan participants</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset_d946246e-9756-44d9-a601-dcd36dd2aad5_terseLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contributions by plan participants</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan by plan participants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_NumberOfSharesIssuedTreasurySharesEquity_876d6325-3fcd-4fe5-b379-d2faee803641_terseLabel_en-US" xlink:label="lab_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issued in relation to creation of treasury shares in August 2022</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedTreasurySharesEquity_label_en-US" xlink:label="lab_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued, Treasury Shares, Equity</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedTreasurySharesEquity_documentation_en-US" xlink:label="lab_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued, Treasury Shares, Equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:href="moln-20221231.xsd#moln_NumberOfSharesIssuedTreasurySharesEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:to="lab_moln_NumberOfSharesIssuedTreasurySharesEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod_63b5fd94-c23c-417a-8887-a3054e014fe0_terseLabel_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Vesting period</link:label>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod_label_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Vesting Requirements For Share-Based Payment Arrangement, Vesting Period</link:label>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod_documentation_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Vesting Requirements For Share-Based Payment Arrangement, Vesting Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:href="moln-20221231.xsd#moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:to="lab_moln_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted_47757e62-5a57-4203-bd3c-8f9c10bbe746_terseLabel_en-US" xlink:label="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average fair value of rights granted (in CHF per shares)</link:label>
    <link:label id="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted_label_en-US" xlink:label="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Fair Value Price At Measurement Date, Other Equity Instruments Granted</link:label>
    <link:label id="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted_documentation_en-US" xlink:label="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Fair Value Price At Measurement Date, Other Equity Instruments Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:href="moln-20221231.xsd#moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:to="lab_moln_WeightedAverageFairValuePriceAtMeasurementDateOtherEquityInstrumentsGranted" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAssets_b18002ca-0358-4a79-b4ef-7d21c6518c1c_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_ifrs-full_CurrentAssets_label_en-US" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="lab_ifrs-full_CurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SocialSecurityContributions_ed08a7b3-ae86-4ee4-bb2b-d3c1b730a8f8_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_SocialSecurityContributions" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Social security costs</link:label>
    <link:label id="lab_ifrs-full_SocialSecurityContributions_label_en-US" xlink:label="lab_ifrs-full_SocialSecurityContributions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Social security contributions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SocialSecurityContributions" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SocialSecurityContributions"/>
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    <link:label id="lab_moln_LaterThanFourYearsMember_216bf53d-d556-4cf5-a923-822c34c449e1_terseLabel_en-US" xlink:label="lab_moln_LaterThanFourYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expected revenue recognition in year five and later after balance sheet date</link:label>
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    <link:label id="lab_moln_LaterThanFourYearsMember_documentation_en-US" xlink:label="lab_moln_LaterThanFourYearsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Later Than Four Years</link:label>
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    <link:label id="lab_ifrs-full_GeographicalAreasAxis_8543e235-3323-4e9a-84b6-9b8f8750b165_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Geographical areas [axis]</link:label>
    <link:label id="lab_ifrs-full_GeographicalAreasAxis_label_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Geographical areas [axis]</link:label>
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    <link:label id="lab_moln_LaboratoryEquipmentMember_416d5182-8a7b-47f8-90b0-bbe3b921a283_terseLabel_en-US" xlink:label="lab_moln_LaboratoryEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Laboratory equipment</link:label>
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    <link:label id="lab_moln_LaboratoryEquipmentMember_documentation_en-US" xlink:label="lab_moln_LaboratoryEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Laboratory Equipment</link:label>
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    <link:label id="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption_6e6f1aff-3f0a-4ef3-acb7-408cb793aa76_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Percentage of reasonably possible decrease in actuarial assumption</link:label>
    <link:label id="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption_label_en-US" xlink:label="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Percentage of reasonably possible decrease in actuarial assumption</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption"/>
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    <link:label id="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory_15cb97da-8f54-4afb-8c08-dbe555cbc689_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">General information</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of notes and other explanatory information [text block]</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019_fb5514ba-5a8d-4e6c-a91c-e5fb63481947_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of share options expired (in CHF per share)</link:label>
    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019_label_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of share options expired in share-based payment arrangement</link:label>
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    <link:label id="lab_ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption_169f35de-9aa2-4ee7-b97b-ae6bf30fbbc4_terseLabel_en-US" xlink:label="lab_ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Percentage of reasonably possible increase in actuarial assumption</link:label>
    <link:label id="lab_ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption_label_en-US" xlink:label="lab_ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Percentage of reasonably possible increase in actuarial assumption</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption"/>
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    <link:label id="lab_ifrs-full_TypesOfContractsMember_a8419128-bd60-4c29-bb96-f858d6f73bca_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Types of contracts [member]</link:label>
    <link:label id="lab_ifrs-full_TypesOfContractsMember_label_en-US" xlink:label="lab_ifrs-full_TypesOfContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Types of contracts [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfContractsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfContractsMember" xlink:to="lab_ifrs-full_TypesOfContractsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities_2cf7642b-8c0f-4742-9de3-e7141d6ea37c_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Change in contract liability</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for increase (decrease) in contract liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInContractLiabilities"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_35e75d59-43eb-4f33-80b7-d1793a72f847_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Change in employee benefits</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for increase (decrease) in employee benefit liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities"/>
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    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillAbstract_label_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intangible assets other than goodwill [abstract]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IntangibleAssetsOtherThanGoodwillAbstract" xlink:to="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory_dc09263f-a2df-4930-8013-bdad8c10d4f3_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Useful Lives of Property, Plant and Equipment</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory_be4fa58a-92f9-4c4f-b075-03c4ca100bcd_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Reconciliation of Changes in Property, Plant and Equipment</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [text block]</link:label>
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    <link:label id="lab_ifrs-full_TradeReceivablesMember_1147bc88-74b0-4f2a-9e1a-7d8efc339833_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Trade receivables</link:label>
    <link:label id="lab_ifrs-full_TradeReceivablesMember_label_en-US" xlink:label="lab_ifrs-full_TradeReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Trade receivables [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeReceivablesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeReceivablesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeReceivablesMember" xlink:to="lab_ifrs-full_TradeReceivablesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpenseIncomeDefinedBenefitPlans_f99fc482-78c6-4975-9f29-060bf99afe5d_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseIncomeDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">thereof net interest expense on the net defined benefit liability</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseIncomeDefinedBenefitPlans_label_en-US" xlink:label="lab_ifrs-full_InterestExpenseIncomeDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest expense (income), defined benefit plans</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpenseIncomeDefinedBenefitPlans" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestExpenseIncomeDefinedBenefitPlans"/>
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    <link:label id="lab_currency_AllCurrenciesDomain_d6def118-f576-4d6e-8b3d-45c4859504bf_terseLabel_en-US" xlink:label="lab_currency_AllCurrenciesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">All Currencies [Domain]</link:label>
    <link:label id="lab_currency_AllCurrenciesDomain_label_en-US" xlink:label="lab_currency_AllCurrenciesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">All Currencies [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_AllCurrenciesDomain"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_78597472-0355-474a-a74f-bd42a26830db_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Foreign currency translation / transactions</link:label>
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    <link:label id="lab_ifrs-full_NoncurrentAssets_48fe7ef4-a6f6-4949-a7a3-ea6f9edf6325_totalLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total non-current assets</link:label>
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    <link:label id="lab_ifrs-full_OperatingExpense_37e3207d-40c6-4a00-a946-5ce838d84c64_negatedTotalLabel_en-US" xlink:label="lab_ifrs-full_OperatingExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total operating expenses</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsTable_39f3562a-a325-413d-b0f3-d7375070b942_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about intangible assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about intangible assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsTable"/>
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    <link:label id="lab_moln_RiskFreeInterestRateNBIOtherEquityInstrumentsGranted_e90fbd44-6dc7-473f-832e-7f3eb66064d9_terseLabel_en-US" xlink:label="lab_moln_RiskFreeInterestRateNBIOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Risk free interest rate, NBI</link:label>
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    <link:label id="lab_dei_DocumentAnnualReport_103ac95e-d28e-400b-bf4a-5a676e1a371b_terseLabel_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Annual Report</link:label>
    <link:label id="lab_dei_DocumentAnnualReport_label_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Annual Report</link:label>
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    <link:label id="lab_moln_IncreaseDecreaseInAuthorizedShareCapital_a02b93d1-e74e-4730-8150-536d78259c34_terseLabel_en-US" xlink:label="lab_moln_IncreaseDecreaseInAuthorizedShareCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase (decrease) in authorized share capital</link:label>
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    <link:label id="lab_dei_LegalEntityAxis_f72d3bdb-4cf4-407a-a6c6-c4825ff50fa1_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_label_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
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    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_a4cd3ffc-46cb-4c32-96e9-01a29f612905_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems"/>
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    <link:label id="lab_dei_EntityListingsExchangeAxis_f5c215e2-be7c-44a1-815a-546c43f7caa8_terseLabel_en-US" xlink:label="lab_dei_EntityListingsExchangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Listings, Exchange [Axis]</link:label>
    <link:label id="lab_dei_EntityListingsExchangeAxis_label_en-US" xlink:label="lab_dei_EntityListingsExchangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Listings, Exchange [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityListingsExchangeAxis" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityListingsExchangeAxis"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems_407abfe0-f067-440e-a409-36154616a0ca_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of attribution of expenses by nature to their function [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of attribution of expenses by nature to their function [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems"/>
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    <link:label id="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_880e47d9-d041-4b4c-a8ed-584657f12072_terseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Short-term time deposits</link:label>
    <link:label id="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Short-term deposits, not classified as cash equivalents</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_7d91c379-28ba-4b5a-81fd-fdf4c4507142_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of terms and conditions of share-based payment arrangement [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of terms and conditions of share-based payment arrangement [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems"/>
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    <link:label id="lab_moln_CurrentAccruedProjectCostsAndRoyalties_5f5660df-6e9c-418e-a931-bb0e19198b26_terseLabel_en-US" xlink:label="lab_moln_CurrentAccruedProjectCostsAndRoyalties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued project costs and royalties</link:label>
    <link:label id="lab_moln_CurrentAccruedProjectCostsAndRoyalties_label_en-US" xlink:label="lab_moln_CurrentAccruedProjectCostsAndRoyalties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current Accrued Project Costs And Royalties</link:label>
    <link:label id="lab_moln_CurrentAccruedProjectCostsAndRoyalties_documentation_en-US" xlink:label="lab_moln_CurrentAccruedProjectCostsAndRoyalties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current Accrued Project Costs And Royalties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_CurrentAccruedProjectCostsAndRoyalties" xlink:href="moln-20221231.xsd#moln_CurrentAccruedProjectCostsAndRoyalties"/>
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    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutContractLiabilityTable_aa3ce50f-ea08-48ef-a88e-ef0ccf683604_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutContractLiabilityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Contract Liability [Table]</link:label>
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    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutContractLiabilityTable_documentation_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutContractLiabilityTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Contract Liability</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DisclosureOfDetailedInformationAboutContractLiabilityTable" xlink:href="moln-20221231.xsd#moln_DisclosureOfDetailedInformationAboutContractLiabilityTable"/>
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    <link:label id="lab_moln_VSAOMember_d8bf1577-5898-4e5a-937b-534b2a894ed8_terseLabel_en-US" xlink:label="lab_moln_VSAOMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">VSAO</link:label>
    <link:label id="lab_moln_VSAOMember_label_en-US" xlink:label="lab_moln_VSAOMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">VSAO [Member]</link:label>
    <link:label id="lab_moln_VSAOMember_documentation_en-US" xlink:label="lab_moln_VSAOMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">VSAO</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_VSAOMember" xlink:href="moln-20221231.xsd#moln_VSAOMember"/>
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    <link:label id="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_c6304406-afe9-43c1-a1e2-7d47742d9628_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Revenue that was included in contract liability balance at beginning of period</link:label>
    <link:label id="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_label_en-US" xlink:label="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Revenue that was included in contract liability balance at beginning of period</link:label>
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    <link:label id="lab_ifrs-full_GrossLeaseLiabilities_bf2585e6-d67b-4459-b5a1-52dc58f257bb_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total contractual cashflows</link:label>
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    <link:label id="lab_moln_MolecularPartnersIncMember_d1f8c7ce-6811-4f1d-adaf-998f0b48a595_terseLabel_en-US" xlink:label="lab_moln_MolecularPartnersIncMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Molecular Partners Inc.</link:label>
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    <link:label id="lab_moln_CashBalancesInvestmentsNumberOfDifferentSwissBanks_38c85144-a85c-48ea-b20f-a719b22b6b47_terseLabel_en-US" xlink:label="lab_moln_CashBalancesInvestmentsNumberOfDifferentSwissBanks" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of different Swiss banks</link:label>
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    <link:label id="lab_ifrs-full_CurrentPrepaymentsAndCurrentAccruedIncomeOtherThanCurrentContractAssets_301d8387-b97c-4b35-836e-d889515aa750_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentPrepaymentsAndCurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Prepaid expenses and accrued income</link:label>
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    <link:label id="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_8d108ead-04d7-4e02-9660-4d2c73c58640_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expected revenue recognition in year two after balance sheet date</link:label>
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    <link:label id="lab_moln_NumberOfSharesAuthorizedEmployeeParticipation_a25fc6d3-7b30-472e-9735-349d57b21f77_terseLabel_en-US" xlink:label="lab_moln_NumberOfSharesAuthorizedEmployeeParticipation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of shares authorized, employee participation (in shares)</link:label>
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    <link:label id="lab_moln_ESOP2009AndESOP2014Member_b47aa935-e758-47fe-93a2-dc5e1f8b3f19_terseLabel_en-US" xlink:label="lab_moln_ESOP2009AndESOP2014Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">ESOP 2009 and ESOP 2014</link:label>
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    <link:label id="lab_ifrs-full_DepreciationPropertyPlantAndEquipment_f1d5457d-5663-4d88-bf92-421124021a39_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Depreciation charge for the year</link:label>
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    <link:label id="lab_srt_ProductsAndServicesDomain_5298dc24-0dcf-4475-b8cd-d342a4f39f68_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Product and Service [Domain]</link:label>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory_b4c728bb-622b-4230-8b1f-444765be47e5_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share capital / Additional paid-in capital</link:label>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory_b92fd969-6a76-4d14-b06d-d4554321c9d1_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Description of accounting policy for leases [text block]</link:label>
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    <link:label id="lab_dei_EntityShellCompany_4ba0e33a-7657-459f-9522-d4bed1cb45bc_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Shell Company</link:label>
    <link:label id="lab_dei_EntityShellCompany_label_en-US" xlink:label="lab_dei_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Shell Company</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityShellCompany"/>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable_5af938d8-4723-4bb4-aa27-d8cadf39faa5_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about financial instruments [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of detailed information about financial instruments [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable"/>
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    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable_85283bf3-ccd0-4728-a6e6-d2b312029bf1_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Income Taxes And Deferred Taxes [Table]</link:label>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable_label_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Income Taxes And Deferred Taxes [Table]</link:label>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable_documentation_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Income Taxes And Deferred Taxes</link:label>
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    <link:label id="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset_0e6a70dc-599e-4d6e-950f-cff0519244b5_negatedLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contributions by the employer</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset_1e766aab-f3ed-43e7-8af9-bd33a031dd5c_terseLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contributions by the employer</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from resulting from contributions to plan by employer</link:label>
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    <link:label id="lab_moln_DisclosureOfEmployeeBenefitsAndShareBasedPaymentsArrangementsTextBlock_64407312-f46f-4b23-98f1-40a6fd31735f_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfEmployeeBenefitsAndShareBasedPaymentsArrangementsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Personnel expenses</link:label>
    <link:label id="lab_moln_DisclosureOfEmployeeBenefitsAndShareBasedPaymentsArrangementsTextBlock_label_en-US" xlink:label="lab_moln_DisclosureOfEmployeeBenefitsAndShareBasedPaymentsArrangementsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Employee Benefits And Share-Based Payments Arrangements [Text Block]</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_c6a90cd8-770f-43ea-9ad7-a52d17e03d30_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net cash from (used in) operating activities</link:label>
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    <link:label id="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember_6b461018-14af-4e91-9bd2-1fe815e6f896_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial assumption of life expectancy</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial assumption of life expectancy after retirement [member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_LeaseCostRecognisedInProfitOrLoss_d1d23a93-4bd5-4335-9b8a-4b3fe0ae26f8_totalLabel_en-US" xlink:label="lab_moln_LeaseCostRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total amount recognized in profit or loss</link:label>
    <link:label id="lab_moln_LeaseCostRecognisedInProfitOrLoss_label_en-US" xlink:label="lab_moln_LeaseCostRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease, Cost Recognised In Profit Or Loss</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_moln_LeaseCostRecognisedInProfitOrLoss" xlink:href="moln-20221231.xsd#moln_LeaseCostRecognisedInProfitOrLoss"/>
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    <link:label id="lab_ifrs-full_OfficeEquipmentMember_ce301062-3280-4755-9c65-9702c2d759b1_terseLabel_en-US" xlink:label="lab_ifrs-full_OfficeEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Office equipment</link:label>
    <link:label id="lab_ifrs-full_OfficeEquipmentMember_label_en-US" xlink:label="lab_ifrs-full_OfficeEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Office equipment [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OfficeEquipmentMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OfficeEquipmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OfficeEquipmentMember" xlink:to="lab_ifrs-full_OfficeEquipmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_SignificantTransactionsMember_2cbfc726-163a-4e02-9ef1-536f1f7d0f1c_terseLabel_en-US" xlink:label="lab_moln_SignificantTransactionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Significant transactions</link:label>
    <link:label id="lab_moln_SignificantTransactionsMember_label_en-US" xlink:label="lab_moln_SignificantTransactionsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Significant Transactions [Member]</link:label>
    <link:label id="lab_moln_SignificantTransactionsMember_documentation_en-US" xlink:label="lab_moln_SignificantTransactionsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Significant Transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_SignificantTransactionsMember" xlink:href="moln-20221231.xsd#moln_SignificantTransactionsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_SignificantTransactionsMember" xlink:to="lab_moln_SignificantTransactionsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LeaseLiabilitiesAbstract_4e31ccbd-f965-4485-91d9-b6681bfd4730_terseLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities [abstract]</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_LeaseLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LeaseLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LeaseLiabilitiesAbstract" xlink:to="lab_ifrs-full_LeaseLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable_9ebad7cf-55a4-4b94-bfde-80f75e00f8ee_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of transaction price allocated to remaining performance obligations [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of transaction price allocated to remaining performance obligations [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsTable"/>
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    <link:label id="lab_dei_DocumentPeriodEndDate_25f839a7-15c2-48f4-b44a-6dffe0111df4_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_659fb0dd-a4d9-40fc-9049-264256153e4d_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Critical accounting estimates and judgments</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of accounting judgements and estimates [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory"/>
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    <link:label id="lab_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement_f5928afa-88b0-4e40-8fbf-576dff61271d_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share options forfeited (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share options forfeited in share-based payment arrangement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:to="lab_ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_d56bb167-24c6-4061-995b-de771d7abf69_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Employee benefits</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Description of accounting policy for employee benefits [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement_5b42336f-19f3-492e-9ede-d0c0643da128_terseLabel_en-US" xlink:label="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of instruments exercised (in CHF per share)</link:label>
    <link:label id="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement_label_en-US" xlink:label="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Exercise Price Of Instruments Exercised In Share-Based Payment Arrangement</link:label>
    <link:label id="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement_documentation_en-US" xlink:label="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Exercise Price Of Instruments Exercised In Share-Based Payment Arrangement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:href="moln-20221231.xsd#moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:to="lab_moln_WeightedAverageExercisePriceOfInstrumentsExercisedInShareBasedPaymentArrangement" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NetDefinedBenefitLiabilityAssetMember_f6254aa1-2a94-415d-8922-3c1228178c7a_terseLabel_en-US" xlink:label="lab_ifrs-full_NetDefinedBenefitLiabilityAssetMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability (asset) [member]</link:label>
    <link:label id="lab_ifrs-full_NetDefinedBenefitLiabilityAssetMember_label_en-US" xlink:label="lab_ifrs-full_NetDefinedBenefitLiabilityAssetMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net defined benefit liability (asset) [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetDefinedBenefitLiabilityAssetMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetDefinedBenefitLiabilityAssetMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NetDefinedBenefitLiabilityAssetMember" xlink:to="lab_ifrs-full_NetDefinedBenefitLiabilityAssetMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_IncreaseThroughNewLeasesOperatingLeases_546424b8-daf0-4740-bcbf-679b62d5371c_terseLabel_en-US" xlink:label="lab_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Additions / new leases</link:label>
    <link:label id="lab_moln_IncreaseThroughNewLeasesOperatingLeases_label_en-US" xlink:label="lab_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase Through New Leases, Operating Leases</link:label>
    <link:label id="lab_moln_IncreaseThroughNewLeasesOperatingLeases_documentation_en-US" xlink:label="lab_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase Through New Leases, Operating Leases</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:href="moln-20221231.xsd#moln_IncreaseThroughNewLeasesOperatingLeases"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:to="lab_moln_IncreaseThroughNewLeasesOperatingLeases" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets_151c0aff-0c2c-490c-a254-4d7b78963c6f_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Real estate funds</link:label>
    <link:label id="lab_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets_label_en-US" xlink:label="lab_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Real estate, amount contributed to fair value of plan assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets" xlink:to="lab_ifrs-full_PropertyAmountContributedToFairValueOfPlanAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_PensionersMember_22df11de-b39e-4222-a93a-99e5a1c98884_terseLabel_en-US" xlink:label="lab_moln_PensionersMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Pensioners</link:label>
    <link:label id="lab_moln_PensionersMember_label_en-US" xlink:label="lab_moln_PensionersMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Pensioners [Member]</link:label>
    <link:label id="lab_moln_PensionersMember_documentation_en-US" xlink:label="lab_moln_PensionersMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Pensioners</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_PensionersMember" xlink:href="moln-20221231.xsd#moln_PensionersMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_PensionersMember" xlink:to="lab_moln_PensionersMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost_c23be540-37a4-4a21-a045-fa6120ffa79b_terseLabel_en-US" xlink:label="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Pension and share-based compensation costs, non-cash portion</link:label>
    <link:label id="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost_label_en-US" xlink:label="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Post-Employment Benefit Cost And Share-Based Compensation Cost, Non-Cash Effective Cost</link:label>
    <link:label id="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost_documentation_en-US" xlink:label="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Post-Employment Benefit Cost And Share-Based Compensation Cost, Non-Cash Effective Cost</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost" xlink:to="lab_moln_PostEmploymentBenefitCostAndShareBasedCompensationCostNonCashEffectiveCost" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_RoyaltyIncomePercentage_2c7c2495-cf01-433e-9910-6ebac14cd5b6_terseLabel_en-US" xlink:label="lab_moln_RoyaltyIncomePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty income, percentage</link:label>
    <link:label id="lab_moln_RoyaltyIncomePercentage_label_en-US" xlink:label="lab_moln_RoyaltyIncomePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty Income, Percentage</link:label>
    <link:label id="lab_moln_RoyaltyIncomePercentage_documentation_en-US" xlink:label="lab_moln_RoyaltyIncomePercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Royalty Income, Percentage</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_RoyaltyIncomePercentage" xlink:href="moln-20221231.xsd#moln_RoyaltyIncomePercentage"/>
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    <link:label id="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities_fcdba6a5-5ba6-4e68-aab9-87eada8ccebf_negatedTerseLabel_en-US" xlink:label="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Offset of costs</link:label>
    <link:label id="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities_0ad7e406-6221-4524-b120-a89aa4f3178d_terseLabel_en-US" xlink:label="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Offset of costs</link:label>
    <link:label id="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities_label_en-US" xlink:label="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Decrease Through Offset Of Costs, Contract Liabilities</link:label>
    <link:label id="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities_documentation_en-US" xlink:label="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Decrease Through Offset Of Costs, Contract Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:href="moln-20221231.xsd#moln_DecreaseThroughOffsetOfCostsContractLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:to="lab_moln_DecreaseThroughOffsetOfCostsContractLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_9ef86167-3b09-493c-9579-1a584c2f9558_totalLabel_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total shareholders' equity and liabilities</link:label>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_label_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Equity and liabilities</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAndLiabilities" xlink:to="lab_ifrs-full_EquityAndLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TreasurySharesMember_43648dc7-1918-4f6a-8c25-1ed4e36429a0_terseLabel_en-US" xlink:label="lab_ifrs-full_TreasurySharesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Treasury share reserve</link:label>
    <link:label id="lab_ifrs-full_TreasurySharesMember_label_en-US" xlink:label="lab_ifrs-full_TreasurySharesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Treasury shares [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasurySharesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasurySharesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TreasurySharesMember" xlink:to="lab_ifrs-full_TreasurySharesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesMember_ab75853c-b973-43d8-a3d9-e255fac4f56b_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial liabilities, class [member]</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesMember_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial liabilities, class [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilitiesMember" xlink:to="lab_ifrs-full_FinancialLiabilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_e1b461cc-c8f6-4a2e-9635-84aae4fe665a_terseLabel_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Applicable estimated useful lives, intangible assets</link:label>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Useful life measured as period of time, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets_af9263b4-8d8e-4119-9075-53c532aa5c87_terseLabel_en-US" xlink:label="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">thereof property occupied or other assets used by the entity</link:label>
    <link:label id="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets_label_en-US" xlink:label="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Property Occupied Or Other Assets Used By Entity Included In Fair Value Of Plan Assets</link:label>
    <link:label id="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets_documentation_en-US" xlink:label="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Property Occupied Or Other Assets Used By Entity Included In Fair Value Of Plan Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:href="moln-20221231.xsd#moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:to="lab_moln_PropertyOccupiedOrOtherAssetsUsedByEntityIncludedInFairValueOfPlanAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember_461b5244-9446-49c6-91b2-864566f0119e_terseLabel_en-US" xlink:label="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reservation Agreement with Swiss Federal Office of Public Health</link:label>
    <link:label id="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember_label_en-US" xlink:label="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reservation Agreement With Swiss Federal Office Of Public Health [Member]</link:label>
    <link:label id="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember_documentation_en-US" xlink:label="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reservation Agreement With Swiss Federal Office Of Public Health</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:href="moln-20221231.xsd#moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:to="lab_moln_ReservationAgreementWithSwissFederalOfficeOfPublicHealthMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CreditRiskMember_f1b8d896-257d-47c5-af18-b850794e090d_terseLabel_en-US" xlink:label="lab_ifrs-full_CreditRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Credit risk</link:label>
    <link:label id="lab_ifrs-full_CreditRiskMember_label_en-US" xlink:label="lab_ifrs-full_CreditRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Credit risk [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CreditRiskMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CreditRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CreditRiskMember" xlink:to="lab_ifrs-full_CreditRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_0c6e19e5-ad6a-48ee-9660-5f85c680a292_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of PSUs and RSUs outstanding (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_8b44ec74-d487-4241-be5a-7ff69f0756c5_periodStartLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of PSU and RSU outstanding at beginning of period (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_156027dd-8bde-4999-8ba4-79c2aa9d62a3_periodEndLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of PSU and RSU outstanding at end of period (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of other equity instruments outstanding in share-based payment arrangement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:to="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_ExtendedPeriodOfReservationAgreement_9fa2759a-83d4-43a2-8c94-1d7506eb63eb_terseLabel_en-US" xlink:label="lab_moln_ExtendedPeriodOfReservationAgreement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Extended period of reservation agreement</link:label>
    <link:label id="lab_moln_ExtendedPeriodOfReservationAgreement_label_en-US" xlink:label="lab_moln_ExtendedPeriodOfReservationAgreement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Extended Period Of Reservation Agreement</link:label>
    <link:label id="lab_moln_ExtendedPeriodOfReservationAgreement_documentation_en-US" xlink:label="lab_moln_ExtendedPeriodOfReservationAgreement" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Extended Period Of Reservation Agreement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ExtendedPeriodOfReservationAgreement" xlink:href="moln-20221231.xsd#moln_ExtendedPeriodOfReservationAgreement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ExtendedPeriodOfReservationAgreement" xlink:to="lab_moln_ExtendedPeriodOfReservationAgreement" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_NoTradingSymbolFlag_b233be2f-4515-40f8-bfc3-a47dd2333c33_terseLabel_en-US" xlink:label="lab_dei_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">No Trading Symbol Flag</link:label>
    <link:label id="lab_dei_NoTradingSymbolFlag_label_en-US" xlink:label="lab_dei_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">No Trading Symbol Flag</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_NoTradingSymbolFlag" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_NoTradingSymbolFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_NoTradingSymbolFlag" xlink:to="lab_dei_NoTradingSymbolFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_c20b3da2-2a8b-4108-9352-d9e3a331672f_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net cash (used in) from financing activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_9f362a5d-0cd1-43e2-bd06-599d82995568_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest expense on leases</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_c4c4d696-e95d-4b62-b751-99dfa82f680c_verboseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Recognition of interest on lease liabilities</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_8c9442e3-be40-4a67-8d2a-050a99101274_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest expense on lease liabilities</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest expense on lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:to="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NetForeignExchangeGain_e09a59c0-f5e7-422a-92f9-8d9b8e555333_terseLabel_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeGain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net foreign exchange gain</link:label>
    <link:label id="lab_ifrs-full_NetForeignExchangeGain_label_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeGain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net foreign exchange gain</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetForeignExchangeGain" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetForeignExchangeGain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NetForeignExchangeGain" xlink:to="lab_ifrs-full_NetForeignExchangeGain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherEmployeeExpense_128710c7-5fa8-44c1-91b9-6845cb2c13f5_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_OtherEmployeeExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other personnel expenses</link:label>
    <link:label id="lab_ifrs-full_OtherEmployeeExpense_label_en-US" xlink:label="lab_ifrs-full_OtherEmployeeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other employee expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherEmployeeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherEmployeeExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherEmployeeExpense" xlink:to="lab_ifrs-full_OtherEmployeeExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments_5112b9ee-ea53-4d79-9fb2-003d7156e909_terseLabel_en-US" xlink:label="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average remaining contractual life of outstanding PSUs and RSUs</link:label>
    <link:label id="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments_label_en-US" xlink:label="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Remaining Contractual Life Of Outstanding Other Equity Instruments</link:label>
    <link:label id="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments_documentation_en-US" xlink:label="lab_moln_WeightedAverageRemainingContractualLifeOfOutstandingOtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted Average Remaining Contractual Life Of Outstanding Other Equity Instruments</link:label>
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    <link:label id="lab_dei_EntityRegistrantName_label_en-US" xlink:label="lab_dei_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Registrant Name</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable"/>
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    <link:label id="lab_ifrs-full_ChangesInNumberOfSharesOutstandingAbstract_4cf869fb-2793-4224-8b58-ebe1192f9ec0_terseLabel_en-US" xlink:label="lab_ifrs-full_ChangesInNumberOfSharesOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Changes in number of shares outstanding [abstract]</link:label>
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    <link:label id="lab_ifrs-full_InterestRateRiskMember_86ee0bdf-825c-42fc-87e6-81a0f97d0003_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest rate risk</link:label>
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    <link:label id="lab_dei_EntityAddressCityOrTown_170beb97-aa0b-4291-9d05-bf73122effb1_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Address, City or Town</link:label>
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    <link:label id="lab_moln_RightOfUseAssetsPropertyPlantAndEquipmentMember_be35ff64-3215-4eb7-a981-440f21c1a6c4_terseLabel_en-US" xlink:label="lab_moln_RightOfUseAssetsPropertyPlantAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Right-of-use assets</link:label>
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    <link:label id="lab_ifrs-full_EstimateOfContributionsExpectedToBePaidToPlan_63afd499-1545-4025-babf-b439b3c6d4f9_terseLabel_en-US" xlink:label="lab_ifrs-full_EstimateOfContributionsExpectedToBePaidToPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contributions by the employer</link:label>
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    <link:label id="lab_moln_IndividualsAxis_e49af348-ad13-4da2-a4ea-ed3c638840e4_terseLabel_en-US" xlink:label="lab_moln_IndividualsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Individuals [Axis]</link:label>
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    <link:label id="lab_moln_IndividualsAxis_documentation_en-US" xlink:label="lab_moln_IndividualsAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Individuals</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_IndividualsAxis" xlink:href="moln-20221231.xsd#moln_IndividualsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_IndividualsAxis" xlink:to="lab_moln_IndividualsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LeaseholdImprovementsMember_93f253d3-c3a7-47d6-b5f6-15be46084fdc_terseLabel_en-US" xlink:label="lab_ifrs-full_LeaseholdImprovementsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Leasehold improvements</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LeaseholdImprovementsMember" xlink:to="lab_ifrs-full_LeaseholdImprovementsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_fb50683d-6a8f-4a15-8556-5b3631bc756e_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exchange differences on translating foreign operations</link:label>
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    <link:label id="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_a5c5cf39-3ddf-45d0-b57c-64a0192d0f83_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Pension costs</link:label>
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    <link:label id="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_label_en-US" xlink:label="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Post-employment benefit expense in profit or loss, defined benefit plans</link:label>
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    <link:label id="lab_srt_MinimumMember_df6e2f0e-5be7-4b4d-86a4-df0387dc881a_terseLabel_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_srt_MinimumMember_label_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Minimum [Member]</link:label>
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    <link:label id="lab_dei_EntityEmergingGrowthCompany_dab63eba-769d-4de4-b7dd-6bd724591a43_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Emerging Growth Company</link:label>
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    <link:label id="lab_moln_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent_f975d605-8b8a-4820-819f-46975d479e94_terseLabel_en-US" xlink:label="lab_moln_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase in exchange rates</link:label>
    <link:label id="lab_moln_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent_22bd1945-f66c-4d1a-961e-35260a7e635f_verboseLabel_en-US" xlink:label="lab_moln_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase in interest rates</link:label>
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    <link:label id="lab_moln_UniversityOfUtrechtMember_df4f1b09-321a-4756-a4fc-ff80f66e59e1_terseLabel_en-US" xlink:label="lab_moln_UniversityOfUtrechtMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">University of Utrecht</link:label>
    <link:label id="lab_moln_UniversityOfUtrechtMember_label_en-US" xlink:label="lab_moln_UniversityOfUtrechtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">University Of Utrecht [Member]</link:label>
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    <link:label id="lab_moln_WeightedAverageExercisePriceOfInstrumentsForfeitedInShareBasedPaymentArrangement_375d4993-5ab8-4421-96bd-cc35e4920611_terseLabel_en-US" xlink:label="lab_moln_WeightedAverageExercisePriceOfInstrumentsForfeitedInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of instruments forfeited (in CHF per share)</link:label>
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    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementCliffVestingPercentage_99db0c73-b9d6-4d2f-a0fb-b137d9de289e_terseLabel_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementCliffVestingPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Cliff vesting percentage</link:label>
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    <link:label id="lab_ifrs-full_OtherAssetsAmountContributedToFairValueOfPlanAssets_92d026d3-1c1d-4fe1-a30d-09724859e6ed_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherAssetsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Others</link:label>
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    <link:label id="lab_moln_AmericanDepositorySharesTheNasdaqStockMarketLLCMember_37ca7398-ffa0-405b-9a01-f3a289dd7a70_terseLabel_en-US" xlink:label="lab_moln_AmericanDepositorySharesTheNasdaqStockMarketLLCMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">American depositary shares (each representing one common share, CHF 0.10 nominal value per share)</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory_8277ef92-b6b4-4136-9c97-6167d04e0f28_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Contractual Maturities of Financial Liabilities</link:label>
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    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlansAbstract_603d33aa-d7a4-4d10-bdc0-c4bc498cc6ce_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlansAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reconciliation of amount recognized in OCI</link:label>
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    <link:label id="lab_ifrs-full_PlanAssetsMember_faab0d8c-fc7f-4b48-9ca1-874105fc4c2a_terseLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Plan assets</link:label>
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    <link:label id="lab_moln_NumberOfInstrumentsExercisableInShareBasedPaymentArrangement_813093b1-df99-488d-9577-3d42ee2b2358_terseLabel_en-US" xlink:label="lab_moln_NumberOfInstrumentsExercisableInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of instruments exercisable (in shares</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_feb7b7f8-b33f-4e1a-ba85-6e1e69f1454b_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Depreciation and amortization</link:label>
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    <link:label id="lab_ifrs-full_EmployeeBenefitsExpense_2dba2350-73e2-493a-93c4-aa6a1a8bcc2b_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_EmployeeBenefitsExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Personnel expenses</link:label>
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    <link:label id="lab_ifrs-full_EmployeeBenefitsExpense_label_en-US" xlink:label="lab_ifrs-full_EmployeeBenefitsExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Employee benefits expense</link:label>
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    <link:label id="lab_moln_ExpectedVolatilityOnSPIOtherEquityInstrumentsGranted_b6e4c83b-f4af-43b3-80af-ae9c4820ce4a_terseLabel_en-US" xlink:label="lab_moln_ExpectedVolatilityOnSPIOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expected volatility on SPI</link:label>
    <link:label id="lab_moln_ExpectedVolatilityOnSPIOtherEquityInstrumentsGranted_label_en-US" xlink:label="lab_moln_ExpectedVolatilityOnSPIOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expected Volatility On SPI, Other Equity Instruments Granted</link:label>
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    <link:label id="lab_moln_UpfrontPaymentReceived_86c44ad5-8153-47d9-80e0-81d90e529237_terseLabel_en-US" xlink:label="lab_moln_UpfrontPaymentReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Upfront payment</link:label>
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    <link:label id="lab_moln_UpfrontPaymentReceived_documentation_en-US" xlink:label="lab_moln_UpfrontPaymentReceived" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Upfront Payment Received</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_a1d347e0-c526-4359-b6e5-cf15585aa22a_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Change in trade and other receivables</link:label>
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    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_f29b945c-d63b-4996-b68b-0e890de21d16_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share-based compensation</link:label>
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    <link:label id="lab_moln_RestrictedShareUnitsRSUMember_b5c981e0-a329-4888-841f-eb4c059925f3_terseLabel_en-US" xlink:label="lab_moln_RestrictedShareUnitsRSUMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Restricted Share Units (RSU)</link:label>
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    <link:label id="lab_ifrs-full_NumberOfSharesIssued_24cea129-05be-4113-b608-8166ea29a399_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of shares issued (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesIssued_label_en-US" xlink:label="lab_ifrs-full_NumberOfSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of shares issued</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfSharesIssued"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfSharesIssued" xlink:to="lab_ifrs-full_NumberOfSharesIssued" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory_b0068729-804c-402a-96a3-526fada6cdf4_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Conditions and Inputs Used in the Measurement of the Fair Values at Grant Dates</link:label>
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    <link:label id="lab_ifrs-full_InterestIncomeDefinedBenefitPlans_3f2a220f-ec8d-4deb-a4f5-2c641154685c_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_InterestIncomeDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest income on plan assets</link:label>
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    <link:label id="lab_ifrs-full_CurrencyRiskMember_428272ad-60a5-4089-9143-480fea94ab4d_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrencyRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Currency risk</link:label>
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    <link:label id="lab_ifrs-full_PaymentsFromPlanNetDefinedBenefitLiabilityAsset_0a469d0e-c983-42c4-80d6-e3e2683d0866_negatedLabel_en-US" xlink:label="lab_ifrs-full_PaymentsFromPlanNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Benefits (paid)/deposited</link:label>
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    <link:label id="lab_dei_BusinessContactMember_cfad715d-076f-41c8-a1a2-5844dd54981c_terseLabel_en-US" xlink:label="lab_dei_BusinessContactMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Business Contact</link:label>
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    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivables_e693a96c-699e-45a5-9295-d467a1ae0717_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Trade and other receivables</link:label>
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    <link:label id="lab_moln_ActuarialGainsLossesNetOfTaxDefinedBenefitPlans_8afb7878-e925-4f96-9f29-f5e4ef4a0648_negatedTotalLabel_en-US" xlink:label="lab_moln_ActuarialGainsLossesNetOfTaxDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial (gain)/loss on defined benefit obligation</link:label>
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    <link:label id="lab_moln_DisclosureOfPrepaidExpensesAndAccruedIncomeTextBlock_ff1eaea0-17d8-4c5a-8a2c-b8bc039ce73b_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfPrepaidExpensesAndAccruedIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other current assets</link:label>
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    <link:label id="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract_52112a88-05fe-4585-a520-40c5b3d4b7f9_terseLabel_en-US" xlink:label="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reconciliation of fair value of plan assets</link:label>
    <link:label id="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract_label_en-US" xlink:label="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reconciliation Of Fair Value Of Plan Assets [Abstract]</link:label>
    <link:label id="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract_documentation_en-US" xlink:label="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reconciliation Of Fair Value Of Plan Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:href="moln-20221231.xsd#moln_ReconciliationOfFairValueOfPlanAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:to="lab_moln_ReconciliationOfFairValueOfPlanAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock_8cc7e454-17ed-4654-a48b-f6eeecdd6573_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Movement of Lease Liabilities</link:label>
    <link:label id="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock_label_en-US" xlink:label="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Movement Of Lease Liabilities [Table Text Block]</link:label>
    <link:label id="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock_documentation_en-US" xlink:label="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Movement Of Lease Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:href="moln-20221231.xsd#moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:to="lab_moln_DisclosureOfMovementOfLeaseLiabilitiesTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IssueOfEquity_98550865-33ac-41f5-9891-4fc96aff11b6_terseLabel_en-US" xlink:label="lab_ifrs-full_IssueOfEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issuance of new shares, net of transaction costs</link:label>
    <link:label id="lab_ifrs-full_IssueOfEquity_label_en-US" xlink:label="lab_ifrs-full_IssueOfEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issue of equity</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IssueOfEquity" xlink:to="lab_ifrs-full_IssueOfEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_c4ff09c9-ad87-4c32-a8ce-33f1aad23328_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for:</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments to reconcile profit (loss) [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForReconcileProfitLossAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:to="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AuditorFirmId_552ca69b-f778-470d-b006-8ba114d92e26_terseLabel_en-US" xlink:label="lab_dei_AuditorFirmId" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Auditor Firm ID</link:label>
    <link:label id="lab_dei_AuditorFirmId_label_en-US" xlink:label="lab_dei_AuditorFirmId" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Auditor Firm ID</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorFirmId" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorFirmId"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorFirmId" xlink:to="lab_dei_AuditorFirmId" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets_8f2745e1-02fb-45f4-bdc1-bc6bd62cd83d_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued income</link:label>
    <link:label id="lab_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets_label_en-US" xlink:label="lab_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current accrued income other than current contract assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:to="lab_ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_1f21bacf-839b-4f77-b2dd-e92c6be8504d_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Statement of changes in equity [line items]</link:label>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Statement of changes in equity [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents_e492ba7a-86ca-49f9-835c-dab77b34e53f_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Description of accounting policy for determining components of cash and cash equivalents [text block]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentTransitionReport_88be45b5-eb21-44e2-964e-744e24c26037_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Transition Report</link:label>
    <link:label id="lab_dei_DocumentTransitionReport_label_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Transition Report</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentTransitionReport"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport" xlink:to="lab_dei_DocumentTransitionReport" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LocalPhoneNumber_6abda363-6307-45b5-96e0-876fcb9ee1c9_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Local Phone Number</link:label>
    <link:label id="lab_dei_LocalPhoneNumber_label_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Local Phone Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LocalPhoneNumber" xlink:to="lab_dei_LocalPhoneNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LeaseLiabilities_c2790d51-1893-40a9-a0e9-0b3b84b90315_periodStartLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities at beginning of period</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_3ebc4870-f8b8-463d-ae5f-0e853d5a1e1f_periodEndLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities at end of period</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_4988de98-51c5-46db-947c-5375a1eda442_totalLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_f7473ced-65d5-4d41-b887-f5a717cb9491_terseLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Carrying Amount lease liabilities</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LeaseLiabilities" xlink:to="lab_ifrs-full_LeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_FederalOfficeOfPublicHealthMember_a8d7c82c-d40d-4eee-966f-256631aba0b0_terseLabel_en-US" xlink:label="lab_moln_FederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">FOPH</link:label>
    <link:label id="lab_moln_FederalOfficeOfPublicHealthMember_label_en-US" xlink:label="lab_moln_FederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Federal Office Of Public Health [Member]</link:label>
    <link:label id="lab_moln_FederalOfficeOfPublicHealthMember_documentation_en-US" xlink:label="lab_moln_FederalOfficeOfPublicHealthMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Federal Office Of Public Health</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_FederalOfficeOfPublicHealthMember" xlink:href="moln-20221231.xsd#moln_FederalOfficeOfPublicHealthMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_FederalOfficeOfPublicHealthMember" xlink:to="lab_moln_FederalOfficeOfPublicHealthMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_AccruedSabbaticalCost_5fc91495-1825-4b0b-afb1-a5bb21eda7b6_terseLabel_en-US" xlink:label="lab_moln_AccruedSabbaticalCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued sabbatical cost</link:label>
    <link:label id="lab_moln_AccruedSabbaticalCost_label_en-US" xlink:label="lab_moln_AccruedSabbaticalCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued Sabbatical Cost</link:label>
    <link:label id="lab_moln_AccruedSabbaticalCost_documentation_en-US" xlink:label="lab_moln_AccruedSabbaticalCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued Sabbatical Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_AccruedSabbaticalCost" xlink:href="moln-20221231.xsd#moln_AccruedSabbaticalCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_AccruedSabbaticalCost" xlink:to="lab_moln_AccruedSabbaticalCost" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted_cd472135-af06-4b33-91b2-b66125368820_terseLabel_en-US" xlink:label="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of PSUs issued, in percentage of number of PSUs granted</link:label>
    <link:label id="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted_label_en-US" xlink:label="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Other Equity Instruments Issued In Share-Based Payment Arrangement, In Percentage Of Number Granted</link:label>
    <link:label id="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted_documentation_en-US" xlink:label="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Other Equity Instruments Issued In Percentage Of Number Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:href="moln-20221231.xsd#moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:to="lab_moln_NumberOfOtherEquityInstrumentsIssuedInShareBasedPaymentArrangementInPercentageOfNumberGranted" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_b7f6165e-99fc-4394-92f9-3180e2dabf12_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of property, plant and equipment [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of property, plant and equipment [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:to="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis_c80fa888-1d33-445e-9d1e-a68a9919e6cd_terseLabel_en-US" xlink:label="lab_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Ranges of exercise prices for outstanding share options [axis]</link:label>
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    <link:label id="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorizedNumberOfShares_e1d7ae50-0a5e-4a77-ab9a-b2fd060bd63f_terseLabel_en-US" xlink:label="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorizedNumberOfShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum amount of share capital increase authorized, number of shares (in shares)</link:label>
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    <link:label id="lab_moln_OptionAndEquityRightsAgreementWithNovartisEnsovibepMember_e928f40a-9163-4a1c-8c42-628ce1fcfcd4_terseLabel_en-US" xlink:label="lab_moln_OptionAndEquityRightsAgreementWithNovartisEnsovibepMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Option and Equity Rights Agreement with Novartis</link:label>
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    <link:label id="lab_ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_08b522b2-9a15-45ca-ab3c-25e90c8eb32a_terseLabel_en-US" xlink:label="lab_ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Additions</link:label>
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    <link:label id="lab_moln_VoluntaryComplementaryPlanMember_0e6063bb-2db3-404f-9bb5-7831ccc0811e_terseLabel_en-US" xlink:label="lab_moln_VoluntaryComplementaryPlanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Voluntary complementary plan</link:label>
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    <link:label id="lab_dei_IcfrAuditorAttestationFlag_87d85019-2cba-4a7c-b6ff-570b0d5d62dd_terseLabel_en-US" xlink:label="lab_dei_IcfrAuditorAttestationFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">ICFR Auditor Attestation Flag</link:label>
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    <link:label id="lab_moln_WeightedAverageExercisePriceOfInstrumentsExpiredInShareBasedPaymentArrangement_c366aa82-1b1d-4ce9-bbfa-514d432fac07_terseLabel_en-US" xlink:label="lab_moln_WeightedAverageExercisePriceOfInstrumentsExpiredInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of instruments expired (in CHF per share)</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfCommitmentsExplanatory_0d45ed4d-dfde-495f-8893-7c2220e8a233_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Capital commitments</link:label>
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    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember_22fa6305-57ee-48e0-8c6a-0f3a64de1bed_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial assumption of expected rates of salary increases</link:label>
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    <link:label id="lab_moln_NumberOfShortTermTimeDepositPositions_e9662eb6-2da8-4ba6-b507-c91c435c319e_terseLabel_en-US" xlink:label="lab_moln_NumberOfShortTermTimeDepositPositions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of short-term time deposit positions</link:label>
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    <link:label id="lab_moln_ExercicePriceOfOutstandingOtherEquityInstruments_5e252722-5555-4e4b-8adb-03a5e73bc4ac_terseLabel_en-US" xlink:label="lab_moln_ExercicePriceOfOutstandingOtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exercise price of outstanding PSUs and RSUs (in CHF per share)</link:label>
    <link:label id="lab_moln_ExercicePriceOfOutstandingOtherEquityInstruments_label_en-US" xlink:label="lab_moln_ExercicePriceOfOutstandingOtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exercice Price Of Outstanding Other Equity Instruments</link:label>
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    <link:label id="lab_ifrs-full_EquityInstrumentsAmountContributedToFairValueOfPlanAssets_af793531-3c01-4fae-b37e-3903d48e8255_terseLabel_en-US" xlink:label="lab_ifrs-full_EquityInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Equity instruments</link:label>
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    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits_25dbf5cd-ef07-46ad-8814-a2126a4b14c4_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Post-employment benefits</link:label>
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    <link:label id="lab_moln_NumberOfShareOptionPlans_77cf93c8-75a6-4932-8d8f-ae539fed5785_terseLabel_en-US" xlink:label="lab_moln_NumberOfShareOptionPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share option plans</link:label>
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    <link:label id="lab_moln_NumberOfShareOptionPlans_documentation_en-US" xlink:label="lab_moln_NumberOfShareOptionPlans" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Share Option Plans</link:label>
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    <link:label id="lab_moln_ReconciliationOfDefinedBenefitObligationAbstract_b26ada05-5851-4c5c-b9c5-30859233e05a_terseLabel_en-US" xlink:label="lab_moln_ReconciliationOfDefinedBenefitObligationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reconciliation of defined benefit obligation</link:label>
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    <link:label id="lab_ifrs-full_OtherFinanceCost_be92f22c-88ea-4ff1-8d71-3943390a0923_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_OtherFinanceCost" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other financial expenses</link:label>
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    <link:label id="lab_ifrs-full_ContractLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_ContractLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contract liabilities [abstract]</link:label>
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    <link:label id="lab_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_3532974b-69c0-40cf-9e08-74b5fa048a12_terseLabel_en-US" xlink:label="lab_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exchange gain (loss) on cash positions</link:label>
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    <link:label id="lab_srt_CounterpartyNameAxis_2650c952-0559-49b6-9762-e0daad98db95_terseLabel_en-US" xlink:label="lab_srt_CounterpartyNameAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Counterparty Name [Axis]</link:label>
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    <link:label id="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod_6748cde8-0d30-4fe6-abec-5acb2c065a56_terseLabel_en-US" xlink:label="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Amount utilized during period</link:label>
    <link:label id="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod_label_en-US" xlink:label="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Upfront Payment, Amount Utilized During Period</link:label>
    <link:label id="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod_documentation_en-US" xlink:label="lab_moln_UpfrontPaymentAmountUtilizedDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Upfront Payment, Amount Utilized During Period</link:label>
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    <link:label id="lab_moln_PerformanceShareUnitsPSUEmployeesExcludingManagementBoardMember_12f780d0-800e-4cae-a19f-a8ecfe533188_terseLabel_en-US" xlink:label="lab_moln_PerformanceShareUnitsPSUEmployeesExcludingManagementBoardMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Performance Share Units (PSU), Employees excluding Management Board</link:label>
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    <link:label id="lab_ifrs-full_FinancialLiabilities_0f031d82-12c9-4558-8b41-00083f9684a0_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial liabilities</link:label>
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    <link:label id="lab_ifrs-full_AdditionalPaidinCapital_98e9d6a6-0134-46c0-be41-5ad201107372_terseLabel_en-US" xlink:label="lab_ifrs-full_AdditionalPaidinCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Additional paid-in capital</link:label>
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    <link:label id="lab_ifrs-full_NumberOfSharesOutstanding_59bc5489-930b-4fc3-bf02-9e48b209ac96_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of shares outstanding (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesOutstanding_523714f2-bef9-41f3-ae91-6b2cbef2fa02_periodStartLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Shares in issue at start of period</link:label>
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    <link:label id="lab_ifrs-full_NumberOfSharesOutstanding_label_en-US" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of shares outstanding</link:label>
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    <link:label id="lab_ifrs-full_StatementOfChangesInEquityAbstract_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Statement of changes in equity [abstract]</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_884d73db-f680-48c8-ab22-a6b4c80aee88_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Operating result</link:label>
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    <link:label id="lab_dei_EntityIncorporationStateCountryCode_efcf9b47-4fb3-4f00-adce-47360c5a2ef7_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:label id="lab_dei_EntityIncorporationStateCountryCode_label_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
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    <link:label id="lab_srt_CurrencyAxis_d008ee07-3edf-4ee5-8e77-71e4f4b5b0fb_terseLabel_en-US" xlink:label="lab_srt_CurrencyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Currency [Axis]</link:label>
    <link:label id="lab_srt_CurrencyAxis_label_en-US" xlink:label="lab_srt_CurrencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Currency [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CurrencyAxis"/>
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    <link:label id="lab_dei_DocumentRegistrationStatement_aa38dedb-f07d-4787-9635-662a2c8f2686_terseLabel_en-US" xlink:label="lab_dei_DocumentRegistrationStatement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Registration Statement</link:label>
    <link:label id="lab_dei_DocumentRegistrationStatement_label_en-US" xlink:label="lab_dei_DocumentRegistrationStatement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Document Registration Statement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentRegistrationStatement" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentRegistrationStatement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentRegistrationStatement" xlink:to="lab_dei_DocumentRegistrationStatement" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized_8df7a12a-ec54-46ef-a0e3-555e8e501031_terseLabel_en-US" xlink:label="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum amount of share capital increase authorized</link:label>
    <link:label id="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized_label_en-US" xlink:label="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum Amount Of Share Capital Increase Authorized</link:label>
    <link:label id="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized_documentation_en-US" xlink:label="lab_moln_MaximumAmountOfShareCapitalIncreaseAuthorized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum Amount Of Share Capital Increase Authorized</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_MaximumAmountOfShareCapitalIncreaseAuthorized" xlink:href="moln-20221231.xsd#moln_MaximumAmountOfShareCapitalIncreaseAuthorized"/>
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    <link:label id="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax_b632768e-db7b-4235-89e4-6a805979535c_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Withholding tax</link:label>
    <link:label id="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax_label_en-US" xlink:label="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current receivables from taxes other than income tax</link:label>
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    <link:label id="lab_moln_LeaseExtensionOrTerminationOptionPeriod_de1a8259-b19c-407b-992f-16fa8a44ebca_terseLabel_en-US" xlink:label="lab_moln_LeaseExtensionOrTerminationOptionPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease, extension or termination option, period</link:label>
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    <link:label id="lab_moln_LeaseExtensionOrTerminationOptionPeriod_documentation_en-US" xlink:label="lab_moln_LeaseExtensionOrTerminationOptionPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease, Extension Or Termination Option, Period</link:label>
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    <link:label id="lab_moln_RevenueFromRechargeOfEmployeeRelatedExpenses_1b59fc22-fe58-4b85-9da4-8ca12b82d789_terseLabel_en-US" xlink:label="lab_moln_RevenueFromRechargeOfEmployeeRelatedExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Decrease through recharge of employee related expenses</link:label>
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    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsAxis_f1c290d4-f249-4ed3-9495-ab91e5eddc79_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Categories of financial assets [axis]</link:label>
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    <link:label id="lab_moln_ChangesInWorkingCapitalAbstract_ab6dc98d-a0e1-4a72-b2d3-7f43836a01cd_terseLabel_en-US" xlink:label="lab_moln_ChangesInWorkingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Changes in working capital:</link:label>
    <link:label id="lab_moln_ChangesInWorkingCapitalAbstract_label_en-US" xlink:label="lab_moln_ChangesInWorkingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Changes In Working Capital [Abstract]</link:label>
    <link:label id="lab_moln_ChangesInWorkingCapitalAbstract_documentation_en-US" xlink:label="lab_moln_ChangesInWorkingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Changes In Working Capital</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ChangesInWorkingCapitalAbstract" xlink:href="moln-20221231.xsd#moln_ChangesInWorkingCapitalAbstract"/>
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    <link:label id="lab_moln_ThereafterMember_8f4458d1-430c-4c83-b89e-20dcf81e25ef_terseLabel_en-US" xlink:label="lab_moln_ThereafterMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_moln_ThereafterMember_label_en-US" xlink:label="lab_moln_ThereafterMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Thereafter [Member]</link:label>
    <link:label id="lab_moln_ThereafterMember_documentation_en-US" xlink:label="lab_moln_ThereafterMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Thereafter</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ThereafterMember" xlink:href="moln-20221231.xsd#moln_ThereafterMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ThereafterMember" xlink:to="lab_moln_ThereafterMember" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_CHF_35a3cb6a-ca80-4322-9c05-84ae6b7a7b17_terseLabel_en-US" xlink:label="lab_currency_CHF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">CHF</link:label>
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    <link:label id="lab_currency_CHF_label_en-US" xlink:label="lab_currency_CHF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Switzerland, Francs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_CHF" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_CHF"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory_38cc022b-63d8-447e-ac0c-dcec9b807e6f_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Description of accounting policy for intangible assets other than goodwill [text block]</link:label>
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    <link:label id="lab_ifrs-full_ServicesReceivedRelatedPartyTransactions_6fa18ca7-c572-4044-9577-2d1f239ea51a_terseLabel_en-US" xlink:label="lab_ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Related party fees</link:label>
    <link:label id="lab_ifrs-full_ServicesReceivedRelatedPartyTransactions_label_en-US" xlink:label="lab_ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Services received, related party transactions</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:to="lab_ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CapitalCommitmentsAbstract_label_en-US" xlink:label="lab_ifrs-full_CapitalCommitmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Capital commitments [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CapitalCommitmentsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CapitalCommitmentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CapitalCommitmentsAbstract" xlink:to="lab_ifrs-full_CapitalCommitmentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_AuthorizedShareCapitalFinancingTransactions_6b9b9f80-59be-41cd-8fb0-d8835b661f0f_terseLabel_en-US" xlink:label="lab_moln_AuthorizedShareCapitalFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Authorized share capital, financing transactions</link:label>
    <link:label id="lab_moln_AuthorizedShareCapitalFinancingTransactions_label_en-US" xlink:label="lab_moln_AuthorizedShareCapitalFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Authorized Share Capital, Financing Transactions</link:label>
    <link:label id="lab_moln_AuthorizedShareCapitalFinancingTransactions_documentation_en-US" xlink:label="lab_moln_AuthorizedShareCapitalFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Authorized Share Capital, Financing Transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_AuthorizedShareCapitalFinancingTransactions" xlink:href="moln-20221231.xsd#moln_AuthorizedShareCapitalFinancingTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_AuthorizedShareCapitalFinancingTransactions" xlink:to="lab_moln_AuthorizedShareCapitalFinancingTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_MaximumMember_7b1db6bd-eff6-426b-b4a1-17f0b90abe3e_terseLabel_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_srt_MaximumMember_label_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember" xlink:to="lab_srt_MaximumMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForSharebasedPayments_4b07ba29-d88b-4004-a435-6ad5a1e9f1dc_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForSharebasedPayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share-based compensation costs</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForSharebasedPayments_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForSharebasedPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for share-based payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForSharebasedPayments" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForSharebasedPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForSharebasedPayments" xlink:to="lab_ifrs-full_AdjustmentsForSharebasedPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NetForeignExchangeLoss_c954fc71-52a1-4da1-a96e-c3084761bc5b_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeLoss" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net foreign exchange loss</link:label>
    <link:label id="lab_ifrs-full_NetForeignExchangeLoss_label_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net foreign exchange loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetForeignExchangeLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetForeignExchangeLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NetForeignExchangeLoss" xlink:to="lab_ifrs-full_NetForeignExchangeLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_8ec4ce6b-085b-407f-a553-5129c68efc2e_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Change in trade and other payables</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for increase (decrease) in trade and other payables</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:to="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesLineItems_d0b5cd90-764d-4f4d-8639-a35dea055240_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutIncomeTaxesAndDeferredTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Income Taxes And Deferred Taxes [Line Items]</link:label>
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    <link:label id="lab_moln_ExpiringIn2027Member_8bcd1f63-8665-499c-84e9-c60d1df587ce_terseLabel_en-US" xlink:label="lab_moln_ExpiringIn2027Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">2027</link:label>
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    <link:label id="lab_ifrs-full_EquityMember_80146e06-6d61-4a76-b52d-10f82b0773e4_terseLabel_en-US" xlink:label="lab_ifrs-full_EquityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Equity [member]</link:label>
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    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases_1896be83-b151-4c3b-b0ef-d72a835ffb76_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Future salary increases at December 31</link:label>
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    <link:label id="lab_moln_ShareOptionsPSUsAndRSUsMember_a91ea979-5f97-4b7b-a6a6-e52de666f370_terseLabel_en-US" xlink:label="lab_moln_ShareOptionsPSUsAndRSUsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">PSU, RSU and options</link:label>
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    <link:label id="lab_ifrs-full_NumberOfOutstandingShareOptions_d64a1056-0b56-42bb-806d-dac03e0ef29f_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOutstandingShareOptions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of share options outstanding (in shares)</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_5d08a059-9df7-46e5-a0cf-6021ddf0d001_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Trade and other payables</link:label>
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    <link:label id="lab_moln_AccruedProjectCostsAndRoyaltiesMember_79447194-009c-44d6-ad2b-ee06760d34a9_terseLabel_en-US" xlink:label="lab_moln_AccruedProjectCostsAndRoyaltiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued project costs and royalties</link:label>
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    <link:label id="lab_ifrs-full_LaterThanFiveYearsMember_c77c0713-a6f8-4611-8f78-d44654cb399d_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">More than 5 years</link:label>
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    <link:label id="lab_moln_IncreaseDecreaseInAuthorizedShareCapitalEmployeeParticipation_30abd04d-6bfb-4688-8d47-d121f53e0bc3_terseLabel_en-US" xlink:label="lab_moln_IncreaseDecreaseInAuthorizedShareCapitalEmployeeParticipation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase (decrease) in authorized share capital, employee participation</link:label>
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    <link:label id="lab_moln_IncreaseDecreaseInAuthorizedShareCapitalEmployeeParticipation_documentation_en-US" xlink:label="lab_moln_IncreaseDecreaseInAuthorizedShareCapitalEmployeeParticipation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase (Decrease) In Authorized Share Capital, Employee Participation</link:label>
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    <link:label id="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement_7ef30277-a73b-410b-b272-06d3bd37d87a_periodStartLabel_en-US" xlink:label="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of instruments outstanding, beginning of period (in shares)</link:label>
    <link:label id="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement_eab5488f-6fec-41ee-91bd-7839213ca19a_periodEndLabel_en-US" xlink:label="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of instruments outstanding, end of period (in shares)</link:label>
    <link:label id="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement_0c0d2445-8546-4974-afe4-d6c2ee28d556_terseLabel_en-US" xlink:label="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number of instruments outstanding (in shares)</link:label>
    <link:label id="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement_label_en-US" xlink:label="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Instruments Outstanding In Share-Based Payment Arrangement</link:label>
    <link:label id="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement_documentation_en-US" xlink:label="lab_moln_NumberOfInstrumentsOutstandingInShareBasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Instruments Outstanding In Share-Based Payment Arrangement</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory_2d01b755-2ce1-4172-ac1c-b2234b576b76_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of issuance of shares</link:label>
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    <link:label id="lab_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities_f500a288-e403-4097-a80e-ba7338721c26_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other financial expense</link:label>
    <link:label id="lab_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities_label_en-US" xlink:label="lab_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other inflows (outflows) of cash, classified as operating activities</link:label>
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    <link:label id="lab_moln_OperatingExpensesAbstract_b46b80be-f87c-47aa-bb9f-dfe1ae4f8066_terseLabel_en-US" xlink:label="lab_moln_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Operating expenses</link:label>
    <link:label id="lab_moln_OperatingExpensesAbstract_label_en-US" xlink:label="lab_moln_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
    <link:label id="lab_moln_OperatingExpensesAbstract_documentation_en-US" xlink:label="lab_moln_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Operating Expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_OperatingExpensesAbstract" xlink:href="moln-20221231.xsd#moln_OperatingExpensesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_OperatingExpensesAbstract" xlink:to="lab_moln_OperatingExpensesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShorttermEmployeeBenefitsAccruals_7baf8ed2-e494-443a-9268-698481ed9958_terseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued payroll and bonuses</link:label>
    <link:label id="lab_ifrs-full_ShorttermEmployeeBenefitsAccruals_label_en-US" xlink:label="lab_ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Short-term employee benefits accruals</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:to="lab_ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DefinedBenefitPlansAxis_fa464fbe-fd0e-4813-8412-03d7b8c7a673_terseLabel_en-US" xlink:label="lab_ifrs-full_DefinedBenefitPlansAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined benefit plans [axis]</link:label>
    <link:label id="lab_ifrs-full_DefinedBenefitPlansAxis_label_en-US" xlink:label="lab_ifrs-full_DefinedBenefitPlansAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined benefit plans [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DefinedBenefitPlansAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DefinedBenefitPlansAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DefinedBenefitPlansAxis" xlink:to="lab_ifrs-full_DefinedBenefitPlansAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_DefinedBenefitPlanEmployeeContribution_2a2d06f6-1c21-41de-be66-4f9474fb9762_terseLabel_en-US" xlink:label="lab_moln_DefinedBenefitPlanEmployeeContribution" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined benefit plan, employee contribution</link:label>
    <link:label id="lab_moln_DefinedBenefitPlanEmployeeContribution_label_en-US" xlink:label="lab_moln_DefinedBenefitPlanEmployeeContribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined Benefit Plan, Employee Contribution</link:label>
    <link:label id="lab_moln_DefinedBenefitPlanEmployeeContribution_documentation_en-US" xlink:label="lab_moln_DefinedBenefitPlanEmployeeContribution" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined Benefit Plan, Employee Contribution</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DefinedBenefitPlanEmployeeContribution" xlink:href="moln-20221231.xsd#moln_DefinedBenefitPlanEmployeeContribution"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_DefinedBenefitPlanEmployeeContribution" xlink:to="lab_moln_DefinedBenefitPlanEmployeeContribution" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComputerSoftwareMember_43c3d26e-690f-4c4f-a4cb-049404cda8e8_terseLabel_en-US" xlink:label="lab_ifrs-full_ComputerSoftwareMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Software</link:label>
    <link:label id="lab_ifrs-full_ComputerSoftwareMember_label_en-US" xlink:label="lab_ifrs-full_ComputerSoftwareMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Computer software [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComputerSoftwareMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComputerSoftwareMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComputerSoftwareMember" xlink:to="lab_ifrs-full_ComputerSoftwareMember" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable_ecbc7b20-5031-4fa0-83dc-7a96e254a97b_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Employee Benefits [Table]</link:label>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable_label_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Employee Benefits [Table]</link:label>
    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable_documentation_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Employee Benefits [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:href="moln-20221231.xsd#moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:to="lab_moln_DisclosureOfDetailedInformationAboutEmployeeBenefitsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceIncome_c5fccba8-bcc9-45b4-a2b2-c91f5c5187c4_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForFinanceIncome" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial income</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceIncome_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForFinanceIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for finance income</link:label>
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    <link:label id="lab_moln_IntellectualPropertyExpense_2ffbaac5-bad0-4f2d-9825-8c34a029b8b1_negatedTerseLabel_en-US" xlink:label="lab_moln_IntellectualPropertyExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intellectual property</link:label>
    <link:label id="lab_moln_IntellectualPropertyExpense_label_en-US" xlink:label="lab_moln_IntellectualPropertyExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intellectual Property Expense</link:label>
    <link:label id="lab_moln_IntellectualPropertyExpense_documentation_en-US" xlink:label="lab_moln_IntellectualPropertyExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intellectual Property Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_IntellectualPropertyExpense" xlink:href="moln-20221231.xsd#moln_IntellectualPropertyExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_IntellectualPropertyExpense" xlink:to="lab_moln_IntellectualPropertyExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialAssetsCategoryMember_cec69f0e-ae18-49fc-b9ac-69d9ab75dad1_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsCategoryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial assets, category [member]</link:label>
    <link:label id="lab_ifrs-full_FinancialAssetsCategoryMember_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsCategoryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial assets, category [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsCategoryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsCategoryMember"/>
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    <link:label id="lab_ifrs-full_TypesOfRisksMember_1bd8df63-f546-4ff5-b672-219f8e81ccbb_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfRisksMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Risks [member]</link:label>
    <link:label id="lab_ifrs-full_TypesOfRisksMember_label_en-US" xlink:label="lab_ifrs-full_TypesOfRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Risks [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember"/>
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    <link:label id="lab_moln_DisclosureOfDetailedInformationAboutRoyaltiesAndLicenseFeesTable_9c1f1892-9e7c-403d-a4f3-7fe68053ef0c_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfDetailedInformationAboutRoyaltiesAndLicenseFeesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure Of Detailed Information About Royalties And License Fees [Table Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_moln_DisclosureOfDetailedInformationAboutRoyaltiesAndLicenseFeesTable" xlink:href="moln-20221231.xsd#moln_DisclosureOfDetailedInformationAboutRoyaltiesAndLicenseFeesTable"/>
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    <link:label id="lab_moln_ExercisePriceRangeFourMember_2026d55a-0a2a-4788-bb2c-1175a576f924_terseLabel_en-US" xlink:label="lab_moln_ExercisePriceRangeFourMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exercise price, range four</link:label>
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    <link:label id="lab_moln_ExercisePriceRangeFourMember_documentation_en-US" xlink:label="lab_moln_ExercisePriceRangeFourMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Exercise Price Range Four</link:label>
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    <link:label id="lab_moln_NumberOfSharesIssuedInShareBasedPaymentArrangementsEquity_795ed0a5-7fa2-4865-989a-b8507568d391_terseLabel_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInShareBasedPaymentArrangementsEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issued in relation to vesting of PSU, RSU and options</link:label>
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    <link:label id="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_3d80e60f-0821-42dc-80b2-a43780bbecdc_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Categories of financial liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Categories of financial liabilities [axis]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:to="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember_848813b6-3512-450f-b7d6-bc2dfab632a3_terseLabel_en-US" xlink:label="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">All levels of fair value hierarchy [member]</link:label>
    <link:label id="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">All levels of fair value hierarchy [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AllLevelsOfFairValueHierarchyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:to="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressCountry_c3f3b7e4-22b2-4186-be5f-6b0ae1f2d073_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Address, Country</link:label>
    <link:label id="lab_dei_EntityAddressCountry_label_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Address, Country</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCountry" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCountry"/>
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    <link:label id="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset_eb672a76-f401-43e8-84fc-bc9731cb05e0_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current service cost (employer)</link:label>
    <link:label id="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase in net defined benefit liability (asset) resulting from current service cost</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_PotentialFutureMilestonePayments_60a395e8-ef81-4c82-b74e-6a24a7eafca3_terseLabel_en-US" xlink:label="lab_moln_PotentialFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Potential future milestone payments</link:label>
    <link:label id="lab_moln_PotentialFutureMilestonePayments_label_en-US" xlink:label="lab_moln_PotentialFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Potential Future Milestone Payments</link:label>
    <link:label id="lab_moln_PotentialFutureMilestonePayments_documentation_en-US" xlink:label="lab_moln_PotentialFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Potential Future Milestone Payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_PotentialFutureMilestonePayments" xlink:href="moln-20221231.xsd#moln_PotentialFutureMilestonePayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_PotentialFutureMilestonePayments" xlink:to="lab_moln_PotentialFutureMilestonePayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory_cd566a19-5bcc-4358-a96f-27dcab08d844_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Expenses Recognised in Profit or Loss</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of additional information about leasing activities for lessee [text block]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory" xlink:to="lab_ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod_41de192b-e82e-4033-b362-a3279aa3f1cb_terseLabel_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Blocking period</link:label>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod_label_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Vesting Requirements For Share-Based Payment Arrangement, Blocking Period</link:label>
    <link:label id="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod_documentation_en-US" xlink:label="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Vesting Requirements For Share-Based Payment Arrangement, Blocking Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:href="moln-20221231.xsd#moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:to="lab_moln_VestingRequirementsForShareBasedPaymentArrangementBlockingPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_CommercialSupplyOfProductsMember_c082ccf1-9727-4f3f-b5b8-5ae787de9b79_terseLabel_en-US" xlink:label="lab_moln_CommercialSupplyOfProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Commercial supply of products</link:label>
    <link:label id="lab_moln_CommercialSupplyOfProductsMember_label_en-US" xlink:label="lab_moln_CommercialSupplyOfProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Commercial Supply Of Products [Member]</link:label>
    <link:label id="lab_moln_CommercialSupplyOfProductsMember_documentation_en-US" xlink:label="lab_moln_CommercialSupplyOfProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Commercial Supply Of Products</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_CommercialSupplyOfProductsMember" xlink:href="moln-20221231.xsd#moln_CommercialSupplyOfProductsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_CommercialSupplyOfProductsMember" xlink:to="lab_moln_CommercialSupplyOfProductsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable_31671521-daa1-4034-ae5b-e5ea3fe108b0_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of nature and extent of risks arising from financial instruments [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of nature and extent of risks arising from financial instruments [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:to="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentLiabilities_be85539f-3208-4dff-ac10-7720ba587a32_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentLiabilities" xlink:to="lab_ifrs-full_OtherCurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_c81394b9-7ff4-4faf-b6fa-43094053eaed_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average remaining contractual life of outstanding share options</link:label>
    <link:label id="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_label_en-US" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average remaining contractual life of outstanding share options</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:to="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_ActiveMembersMember_1ae164e2-95c1-4402-b702-d01035c7e3c7_terseLabel_en-US" xlink:label="lab_moln_ActiveMembersMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Active members</link:label>
    <link:label id="lab_moln_ActiveMembersMember_label_en-US" xlink:label="lab_moln_ActiveMembersMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Active Members [Member]</link:label>
    <link:label id="lab_moln_ActiveMembersMember_documentation_en-US" xlink:label="lab_moln_ActiveMembersMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Active Members</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ActiveMembersMember" xlink:href="moln-20221231.xsd#moln_ActiveMembersMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ActiveMembersMember" xlink:to="lab_moln_ActiveMembersMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory_dd5addd3-6b78-4e62-8920-81868f7b3d6c_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial liabilities at amortized costs</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Description of accounting policy for financial liabilities [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_76445bc6-9a4d-4cf3-9882-6ef77bd50338_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Investments in treasury shares</link:label>
    <link:label id="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_label_en-US" xlink:label="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Payments to acquire or redeem entity's shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:to="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_ExpiringIn2025Member_d47ecb10-1879-4543-a3ec-ac886d76fa7b_terseLabel_en-US" xlink:label="lab_moln_ExpiringIn2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">2025</link:label>
    <link:label id="lab_moln_ExpiringIn2025Member_label_en-US" xlink:label="lab_moln_ExpiringIn2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expiring In 2025 [Member]</link:label>
    <link:label id="lab_moln_ExpiringIn2025Member_documentation_en-US" xlink:label="lab_moln_ExpiringIn2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expiring In 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_ExpiringIn2025Member" xlink:href="moln-20221231.xsd#moln_ExpiringIn2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_ExpiringIn2025Member" xlink:to="lab_moln_ExpiringIn2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_LabEquipmentMember_84db050a-7fbc-4a31-b161-9d2e88fcd5ac_terseLabel_en-US" xlink:label="lab_moln_LabEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lab equipment</link:label>
    <link:label id="lab_moln_LabEquipmentMember_label_en-US" xlink:label="lab_moln_LabEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lab Equipment [Member]</link:label>
    <link:label id="lab_moln_LabEquipmentMember_documentation_en-US" xlink:label="lab_moln_LabEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lab Equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_LabEquipmentMember" xlink:href="moln-20221231.xsd#moln_LabEquipmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_LabEquipmentMember" xlink:to="lab_moln_LabEquipmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialAssetsAxis_e507cea8-b6c3-4cc4-a2b2-ae0da1413529_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of financial assets [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialAssetsAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Classes of financial assets [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:to="lab_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilities_01590212-b56b-460f-82f1-7cac463961ab_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="lab_ifrs-full_CurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceCosts_c1c13cf9-e467-4f6f-b31e-c0a14a6ec4b9_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForFinanceCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial expenses</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceCosts_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForFinanceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Adjustments for finance costs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFinanceCosts" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForFinanceCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForFinanceCosts" xlink:to="lab_ifrs-full_AdjustmentsForFinanceCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AuditorLocation_69c5b85a-91e0-4488-b07c-d1577111ebf6_terseLabel_en-US" xlink:label="lab_dei_AuditorLocation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Auditor Location</link:label>
    <link:label id="lab_dei_AuditorLocation_label_en-US" xlink:label="lab_dei_AuditorLocation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Auditor Location</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLocation" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorLocation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorLocation" xlink:to="lab_dei_AuditorLocation" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_OtherResearchAndDevelopmentExpense_78a7def1-ae68-477d-9740-97ee663a022c_negatedTerseLabel_en-US" xlink:label="lab_moln_OtherResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other research and development expenses</link:label>
    <link:label id="lab_moln_OtherResearchAndDevelopmentExpense_label_en-US" xlink:label="lab_moln_OtherResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Research And Development Expense</link:label>
    <link:label id="lab_moln_OtherResearchAndDevelopmentExpense_documentation_en-US" xlink:label="lab_moln_OtherResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Research And Development Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_OtherResearchAndDevelopmentExpense" xlink:href="moln-20221231.xsd#moln_OtherResearchAndDevelopmentExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_OtherResearchAndDevelopmentExpense" xlink:to="lab_moln_OtherResearchAndDevelopmentExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_d65eda35-cb4a-4c04-a9d7-b7f58c40270f_terseLabel_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Non-quoted market price</link:label>
    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Level 2 of fair value hierarchy [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level2OfFairValueHierarchyMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Level2OfFairValueHierarchyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level2OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityFilerCategory_2f1363a4-beed-4f82-8c24-c10082532def_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_label_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory" xlink:to="lab_dei_EntityFilerCategory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory_b587fa62-7875-4f82-80af-46bd2f5d15c4_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of Expected Revenue Recognition Analysis for Contract Liabilities</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Disclosure of transaction price allocated to remaining performance obligations [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfTransactionPriceAllocatedToRemainingPerformanceObligationsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity_148c533c-ce3f-4228-8cd7-bc917848ad47_terseLabel_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Issued in relation to capital raise in July 2020</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity_label_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued In Relation To Capital Raise, Equity</link:label>
    <link:label id="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity_documentation_en-US" xlink:label="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Number Of Shares Issued In Relation To Capital Raise, Equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:href="moln-20221231.xsd#moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:to="lab_moln_NumberOfSharesIssuedInRelationToCapitalRaiseEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_country_US_4d49fac4-980d-4c80-a2b2-d755b22e3c59_terseLabel_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Revenues USA</link:label>
    <link:label id="lab_country_US_label_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">UNITED STATES</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_US" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_US"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US" xlink:to="lab_country_US" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_c749d17a-a1b8-4836-a697-8f7b9cce0257_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share-based compensation costs</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Increase (decrease) through share-based payment transactions, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentValueAddedTaxReceivables_f7f49a41-3e95-4652-8bbd-f85f99decc17_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentValueAddedTaxReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Value added tax</link:label>
    <link:label id="lab_ifrs-full_CurrentValueAddedTaxReceivables_label_en-US" xlink:label="lab_ifrs-full_CurrentValueAddedTaxReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current value added tax receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentValueAddedTaxReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentValueAddedTaxReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentValueAddedTaxReceivables" xlink:to="lab_ifrs-full_CurrentValueAddedTaxReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions_d949c9cf-08e5-4678-8cf1-51fe6b44cf0c_terseLabel_en-US" xlink:label="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Commitments made by entity, related party transactions</link:label>
    <link:label id="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions_label_en-US" xlink:label="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Payment For Term Of Employment, Related Party Transactions</link:label>
    <link:label id="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions_documentation_en-US" xlink:label="lab_moln_PaymentForTermOfEmploymentRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Payment For Term Of Employment, Related Party Transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_moln_PaymentForTermOfEmploymentRelatedPartyTransactions" xlink:href="moln-20221231.xsd#moln_PaymentForTermOfEmploymentRelatedPartyTransactions"/>
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    <link:label id="lab_ifrs-full_AssetsAbstract_4f21a101-924a-424b-b508-75679352fef9_terseLabel_en-US" xlink:label="lab_ifrs-full_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Assets</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019_66069370-482f-4874-ba0f-68d70a3d5acd_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of share options granted (in CHF per share)</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_a21fdf3e-9897-4831-bbc3-626b6f04f0be_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Contract liability</link:label>
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    <link:label id="lab_moln_NetOperatingProfit_cf7d0cad-6bb3-4d01-b12a-fc982c4d31c3_terseLabel_en-US" xlink:label="lab_moln_NetOperatingProfit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net operating profit</link:label>
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    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_a49c44a8-3f21-471d-a5fe-6f41af5b3754_terseLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Intangible assets</link:label>
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    <link:label id="lab_moln_LeaseExtensionTermOfContract_dd52f1a6-0a87-4b23-8715-71c137664b96_terseLabel_en-US" xlink:label="lab_moln_LeaseExtensionTermOfContract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lease, extension term</link:label>
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    <link:label id="lab_currency_USD_eaea807f-44f3-467a-bb29-fd05db4045f5_terseLabel_en-US" xlink:label="lab_currency_USD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">USD</link:label>
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    <link:label id="lab_moln_DisclosureOfCashCashEquivalentsAndShortTermTimeDepositsTextBlock_6b6af636-56a7-482d-821c-edb2c7cbb476_terseLabel_en-US" xlink:label="lab_moln_DisclosureOfCashCashEquivalentsAndShortTermTimeDepositsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Cash, cash equivalents and short-term time deposits</link:label>
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    <link:label id="lab_ifrs-full_DefinedBenefitPlansMember_a4980e56-a71f-4f4d-bbb8-cc0028a3ba6a_terseLabel_en-US" xlink:label="lab_ifrs-full_DefinedBenefitPlansMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Defined benefit plans [member]</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_13251764-bc79-47a5-8019-3cd65ef2eb5a_periodStartLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Weighted average exercise price of PSU and RSU outstanding at beginning of period (in CHF per share)</link:label>
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    <link:label id="lab_moln_AccruedIncomeMember_b560af81-70a8-4798-97bd-b49608a91748_terseLabel_en-US" xlink:label="lab_moln_AccruedIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accrued income</link:label>
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    <link:label id="lab_moln_PreemptiveRightsOverAllotmentOptionMaximumPercentageOfTotalNumberOfSharesInAPlacement_c8775fd8-55eb-466d-8931-56389499ec25_terseLabel_en-US" xlink:label="lab_moln_PreemptiveRightsOverAllotmentOptionMaximumPercentageOfTotalNumberOfSharesInAPlacement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maximum percentage of total number of shares in a placement</link:label>
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    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetOfTaxDefinedBenefitPlans_0a6f8b92-3cb2-4acb-9f54-411bd9df89a4_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetOfTaxDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Actuarial (gain) / loss on changes in demographic assumptions</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfExpensesByNatureExplanatory_b4a6eeb2-08c7-4878-bec5-4ac0cf5d50e1_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfExpensesByNatureExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Additional information on the nature of expenses</link:label>
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