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 4-[3-(3-chlorophenyl)-1,2,4-oxadiazol-5-yl]-N-[3-(trifluoromethyl)phenyl]piperidine-1-carboxamide ?
user
C21H18ClF3N4O2
assistant