You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[(2,6-difluorophenyl)methoxy]phenyl]-2-(1H-1,2,4-triazol-5-ylsulfanyl)ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H13F2N3O2S
assistant