You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[2-(4-methoxy-3-piperidin-1-ylsulfonylanilino)-2-oxoethyl]-4-oxophthalazine-1-carboxylic acid into molecular formula.
user
C23H24N4O7S
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