Using CN1CCN(C(=O)OCc2ccccc2)C(C(O)[C@H](Cc2ccccc2)N(Cc2ccccc2)Cc2ccccc2)C1=O to produce CN1CCNC(C(O)[C@@H](N)Cc2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.