You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-1-[4-(cyclopropylsulfamoyl)anilino]-3-methyl-1-oxobutan-2-yl]-3-methylbenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H27N3O4S
assistant