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 (5-chloro-4-methoxy-2-methylphenyl)-(4-methylsulfonyl-1,4-diazepan-1-yl)methanone is given. What is its corresponding molecular formula?
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C15H21ClN2O4S
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