Using CCC(CC)N1C(=O)[C@@](C)(CC(=O)O)C[C@H](c2cccc(Cl)c2)[C@H]1c1ccc(Cl)cc1, CN1CCOCC1 to produce CCC(CC)N1C(=O)[C@@](C)(CC(N)=O)C[C@H](c2cccc(Cl)c2)[C@H]1c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.