You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-6-[3-(6-methylpyridin-2-yl)-2,3-dihydro-1H-1,2,4-triazol-5-yl]pyridine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H15N5
assistant