You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[5-[(2-chlorophenyl)methylsulfanyl]-4-ethyl-1,2,4-triazol-3-yl]-3,4-difluorobenzamide .
user
C18H15ClF2N4OS
assistant