You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(3-methyl-2-oxo-1,3-benzoxazol-6-yl)sulfonyl]-N-[3-(trifluoromethyl)phenyl]piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H20F3N3O5S
assistant