You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3-cyano-2-methyl-4-(9-oxofluoren-4-yl)-6-(trifluoromethyl)-3,4-dihydropyridin-5-yl] propan-2-yl carbonate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H19F3N2O4
assistant