Using CC(C)[C@@H](NC(=O)[C@@H]1CCC(N)(CCO)C1)C(=O)N1CC[C@](O)(c2ccc(Cl)cc2)C(C)(C)C1, O=C(c1ncc[nH]1)c1ncc[nH]1 to produce CC(C)[C@@H](NC(=O)[C@@H]1CCC2(CCOC(=O)N2)C1)C(=O)N1CC[C@](O)(c2ccc(Cl)cc2)C(C)(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.