Using COC(=O)[C@H](CNC(=O)CCNC(=O)CCC1CCN(C(=O)OC(C)(C)C)CC1)NC(=O)OCc1ccccc1 to produce COC(=O)[C@@H](N)CNC(=O)CCNC(=O)CCC1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.