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What is the molecular formula of the compound with this IUPAC name (3S,3aS,6aR)-3-[5-(4-chloro-2-nitrophenyl)furan-2-yl]-5-(4-chlorophenyl)-2-phenyl-3a,6a-dihydro-3H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione ?
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C27H17Cl2N3O6
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