You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-[4-(difluoromethoxy)phenyl]-5-methyl-N-[2-methyl-1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)propyl]triazole-4-carboxamide ?
user
C21H21F2N7O2
assistant