You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2-amino-3-fluoropyridin-4-yl)methyl]-5-fluoro-4-(2-fluoro-4-methylanilino)-6-oxopyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H16F3N5O2
assistant