You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-methyl-N-[(1-methylimidazol-2-yl)methyl]-1-(1-methyl-3-pyridin-4-ylpyrazol-4-yl)methanamine by IUPAC nomenclature, provide its molecular formula.
user
C16H20N6
assistant