Using CNOC, CC(C)(C)OC(=O)N1CC[C@H](O)[C@H]1C(=O)O to produce CON(C)C(=O)[C@@H]1[C@@H](O)CCN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.