You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-amino-N-[2-(difluoromethyl)-3H-benzimidazol-5-yl]-4-methylsulfanylbutanamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H17ClF2N4OS
assistant