You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(2,6-dimethylpyridin-3-yl)-N-[(1S)-1-(5-methyl-1H-1,2,4-triazol-3-yl)ethyl]pyrimidin-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H19N7
assistant