You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-fluoro-3-methyl-6-(4-methylcyclohexanecarbonyl)-9-[3-(trifluoromethyl)pyridin-2-yl]oxy-2,4,5,5a-tetrahydro-[1,2,6]oxadiazepino[3,2-b]quinazolin-11-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H28F4N4O4
assistant