Using COc1ccc(COc2cc(C(=O)Nc3nc(-c4ccco4)c(-c4ccncc4)s3)ccn2)cc1 to produce O=C(Nc1nc(-c2ccco2)c(-c2ccncc2)s1)c1cc[nH]c(=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.