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    <link:label id="lab_grbt_AugmentationDiminutionDesDettesFournisseursDImmobilisations_documentation_fr" xlink:label="lab_grbt_AugmentationDiminutionDesDettesFournisseursDImmobilisations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Augmentation (Diminution) Des Dettes Fournisseurs D Immobilisations</link:label>
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    <link:label id="lab_grbt_CoutDeLaDetteFinanciereBrute_documentation_fr" xlink:label="lab_grbt_CoutDeLaDetteFinanciereBrute" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cout De La Dette Financiere Brute</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_grbt_CoutDeLaDetteFinanciereBrute" xlink:to="lab_grbt_CoutDeLaDetteFinanciereBrute" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_f58ab38e-12fc-4f36-a91f-91469592542f_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie résultant (utilisés dans le cadre) des activités opérationnelles</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_23ca7211-4528-4b19-836e-a9de7637a603_totalLabel_fr" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Augmentation (diminution) de la trésorerie et des équivalents de trésorerie après effet des variations des taux de change</link:label>
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    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_47c3e423-ef75-4b12-b26a-f0f2cbd4a6c8_periodStartLabel_fr" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_31468a8a-abb8-40c0-a795-69a0441526e8_periodEndLabel_fr" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInWorkingCapital_bda534f6-d240-4427-b59c-c1f99b02f296_totalLabel_fr" xlink:label="lab_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Augmentation (diminution) du fonds de roulement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital"/>
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    <link:label id="lab_grbt_Investissements_df349933-2e74-4a76-9943-bdf87877aeaf_totalLabel_fr" xlink:label="lab_grbt_Investissements" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Investissements</link:label>
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    <link:label id="lab_grbt_CapaciteDAutofinancementApresCoutDeLEndettementFinancierNetEtImpot_documentation_fr" xlink:label="lab_grbt_CapaciteDAutofinancementApresCoutDeLEndettementFinancierNetEtImpot" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Capacite D Autofinancement Apres Cout De L Endettement Financier Net Et Impot</link:label>
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