Using COc1ccc2nc(-c3cccnc3)nc(Cl)c2c1, O=c1[nH]c2ccccc2[nH]1 to produce COc1ccc2nc(-c3cccnc3)nc(-n3c(=O)[nH]c4ccccc43)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.