Using COC(=O)C1(c2ccc(Nc3nc(Cl)nc4c3CCC4)cc2)CCC1, Oc1ccccc1 to produce COC(=O)C1(c2ccc(Nc3nc(Oc4ccccc4)nc4c3CCC4)cc2)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.