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What is the molecular formula of the compound with this IUPAC name (2R,3aS,9aR)-2-[(3-fluorophenyl)methyl]-1-(2-methoxyacetyl)-3,3a,4,6,7,8,9,9a-octahydro-2H-pyrrolo[3,2-b]azocin-5-one ?
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C19H25FN2O3
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