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 N-[(R)-(4-chlorophenyl)-phenylmethyl]-2-[(4S)-2',5'-dioxospiro[6,7-dihydro-5H-1-benzothiophene-4,4'-imidazolidine]-1'-yl]acetamide .
user
C25H22ClN3O3S
assistant