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What is the molecular formula of the compound with this IUPAC name (3aS,4R,9aR,9bS)-8-benzoyl-4-(3-bromo-4-methoxybenzoyl)-2-(2-chlorophenyl)-3a,4,9a,9b-tetrahydropyrrolo[3,4-a]indolizine-1,3-dione ?
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C31H22BrClN2O5
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