You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (1'S,2'R,3R,3'aS)-5'-methyl-2'-(3-nitrobenzoyl)-1'-(thiophene-2-carbonyl)spiro[1H-indole-3,3'-2,3a-dihydro-1H-pyrrolo[1,2-a]quinoline]-2-one is given. What is its corresponding molecular formula?
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C32H23N3O5S
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