Using CN(CC(=O)[C@H](Cc1ccccc1)NC(=O)OC(C)(C)C)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1 to produce CN(CC(=O)[C@@H](N)Cc1ccccc1)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.