You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[3-(chloromethyl)-4-[2-(trifluoromethyl)phenyl]phenyl]-3-methoxy-4-sulfamoylbenzamide by IUPAC nomenclature, provide its molecular formula.
user
C22H18ClF3N2O4S
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