You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-[2-(4-ethyl-2-fluoroanilino)-3,4-difluorophenyl]-N-(6-methoxypyridin-3-yl)-1,3,4-oxadiazol-2-amine .
user
C22H18F3N5O2
assistant