You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 5-[(Z)-1-amino-3-[5-[(2,6-difluorophenyl)methylamino]pyridin-2-yl]imino-4,4-difluorobut-1-enyl]-3-methyl-1,3,4-oxadiazol-2-one ?
user
C19H16F4N6O2
assistant