You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-(3,5-dimethylpyrazol-1-yl)-2-methylpropyl]-2-imidazol-1-ylpyridine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22N6O
assistant