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-[2-[3-(3-chlorophenyl)-1,2,4-oxadiazol-5-yl]ethyl]-1-[4-(trifluoromethoxy)phenyl]guanidine ?
user
C18H15ClF3N5O2
assistant