You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[4-(4-aminopiperidin-1-yl)-5-(3-fluoro-5-methylphenyl)pyridin-3-yl]-4-methyl-1,4-benzoxazin-3-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H27FN4O2
assistant