You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-(4-chlorophenyl)tetrazol-2-yl]-1-[2-(difluoromethyl)azetidin-1-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H12ClF2N5O
assistant