You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 5-(2-chloro-4-nitrophenyl)sulfonyl-1,2,3,3a,4,6,7,7a-octahydropyrrolo[3,4-c]pyridine into its molecular formula.
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C13H16ClN3O4S
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