Using COP(=O)(Cc1ccc2nc(Cl)nc(N3CCOCC3)c2n1)OC, CC(C)(C)OC(=O)N1CC(=O)C1 to produce CC(C)(C)OC(=O)N1CC(=Cc2ccc3nc(Cl)nc(N4CCOCC4)c3n2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.