Using COc1ccc(-n2nc(O)c3c(=O)c4ccc(Cl)cc4[nH]c3c2=O)cc1 to produce O=c1c2ccc(Cl)cc2[nH]c2c(=O)n(-c3ccc(O)cc3)nc(O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.