You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[2-[4-(trifluoromethyl)anilino]-[1,2,4]triazolo[1,5-a]pyridin-5-yl]amino]-1H-pyridin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H13F3N6O
assistant