You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-N-[2-chloro-5-(trifluoromethyl)phenyl]-3-(5,6-dimethyl-1H-benzimidazol-2-yl)piperidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H22ClF3N4O
assistant