You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-[(2S,5R)-4-[1-[4-(difluoromethoxy)phenyl]ethyl]-2-ethyl-5-methylpiperazin-1-yl]-5-methyl-6-oxo-1,5-naphthyridine-2-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H29F2N5O2
assistant