You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
propan-2-yl 2-[4-[[3-(2,6-difluoroanilino)phenyl]methyl]piperazin-1-yl]pyridine-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H28F2N4O2
assistant