Using COC(=O)[C@@H]1CCC[C@@H]1NC(=O)[C@H](CCCNC(=O)OCc1ccccc1)NC(=O)OC(C)(C)C to produce COC(=O)[C@@H]1CCC[C@@H]1NC(=O)[C@@H](N)CCCNC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.