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-(difluoromethylsulfonyl)-N-[[5-(2-methyl-2,3-dihydro-1-benzofuran-6-yl)-1,2-oxazol-3-yl]methyl]benzamide ?
user
C21H18F2N2O5S
assistant