You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-(3-chloro-N-methylsulfonylanilino)-N-[4-[(4,6-dimethylpyrimidin-2-yl)sulfamoyl]phenyl]butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26ClN5O5S2
assistant