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system
Provide the molecular formula for the IUPAC named substance N-[4-[(2',5'-dioxospiro[6,7-dihydro-5H-1-benzothiophene-4,4'-imidazolidine]-1'-yl)methyl]-2-oxochromen-7-yl]acetamide .
user
C22H19N3O5S
assistant