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 (3S,3'R,4'R,5'S)-4'-[3,5-dichloro-4-[(3-fluorophenyl)methoxy]phenyl]-5'-methyl-3'-nitrospiro[1H-indole-3,2'-pyrrolidine]-2-one .
user
C25H20Cl2FN3O4
assistant