You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2,3,3a,4-tetrahydro-1H-pyrrolo[1,2-a]quinoxalin-5-yl-(1-naphthalen-2-ylsulfonylpiperidin-4-yl)methanone into molecular formula.
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C27H29N3O3S
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