You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-chloro-N-[[4-(difluoromethoxy)-3-methoxyphenyl]methyl]-5-[methyl(propan-2-yl)sulfamoyl]benzamide ?
user
C20H23ClF2N2O5S
assistant