You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-piperidin-4-yl-N-propyl-3,4-dihydro-2H-1,5-benzodioxepine-7-sulfonamide;hydrochloride by IUPAC nomenclature, provide its molecular formula.
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C17H27ClN2O4S
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