You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[7-methyl-4-[4-(trifluoromethoxy)anilino]pyrrolo[2,3-d]pyrimidin-6-yl]methyl]piperidine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23F3N6O2
assistant