You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(4-chloro-3-nitrophenyl)-7,7-dimethyl-4-(3-methylphenyl)-3,4,6,8-tetrahydroquinoline-2,5-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H23ClN2O4
assistant