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-[2-(3,4-difluoroanilino)-2-oxoethyl]-4-methyl-3-[(3-methylphenyl)sulfamoyl]benzamide is given. What is its corresponding molecular formula?
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C23H21F2N3O4S
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