You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,3'S,4'S,5'R)-4'-amino-6-chloro-3'-(3-chloro-2-fluorophenyl)-5'-(hydroxymethyl)-1'-(2-methylpropyl)spiro[1H-indole-3,2'-pyrrolidine]-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H24Cl2FN3O2
assistant