You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-(3-chlorophenyl)-1-[2-(4-chlorophenyl)-2-oxoethyl]-6,7-dimethoxyquinazoline-2,4-dione .
user
C24H18Cl2N2O5
assistant