You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-methoxypropyl)-4,10,10-trioxo-5H-pyrrolo[1,2-b][1,2,5]benzothiadiazepine-7-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C16H17N3O5S
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