You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3,4-difluorophenyl)-[3-(5-pyridin-2-yl-1,2,4-oxadiazol-3-yl)piperidin-1-yl]methanone .
user
C19H16F2N4O2
assistant