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 N-[3-(furan-2-yl)propyl]-3-methyl-4-oxo-3,5-dihydro-2H-1,5-benzothiazepine-7-sulfonamide is given. What is its corresponding molecular formula?
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C17H20N2O4S2
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