You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-methyl-N-(2-methylcyclohexyl)-2-(trifluoromethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H19F3N4
assistant