You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[2-[(2,3-dichlorophenyl)methyl]pyrazol-3-yl]-3-[methyl(propan-2-yl)sulfamoyl]benzamide ?
user
C21H22Cl2N4O3S
assistant