You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[3-[4-methoxy-3-[(4-methoxyphenyl)sulfamoyl]anilino]-3-oxopropyl]thiophene-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C22H23N3O6S2
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