Using CCOC(=O)[C@H]1O[C@@H]1C(=O)N[C@H](COCC(C)C)CC(C)C to produce CC(C)COC[C@H](CC(C)C)NC(=O)[C@H]1O[C@@H]1C(=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.