You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(4-fluoro-3-methylphenyl)methyl]-1,3,6-trimethylpyrazolo[3,4-b]pyridine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H19FN4O
assistant