You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3'-[2-(1H-indol-3-yl)ethyl]-7-methoxy-1'-methylspiro[2,3-dihydro-1H-quinoline-4,5'-imidazolidine]-2',4'-dione .
user
C23H24N4O3
assistant