You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7S)-1'-tert-butyl-6-quinolin-8-ylspiro[[1,3]dioxolo[4,5-f]isoindole-7,3'-pyrrolidine]-2',5,5'-trione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H21N3O5
assistant