You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-(4,6-difluoro-1H-benzimidazol-2-yl)-3-[4-(trifluoromethyl)phenyl]propane-1-thiol;2,2,2-trifluoroacetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H14F8N2O2S
assistant