You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[6-carbamoyl-5-[(3-fluorophenyl)methylamino]-1,2,4-triazin-3-yl]imidazo[1,5-a]pyridine-8-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H15FN8O2
assistant