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