Using CN1C(=O)C(NC(=O)[C@@H](Cc2ccccc2)NC(=O)OC(C)(C)C)N=C(C2CCCCC2)c2ccccc21 to produce CN1C(=O)[C@H](NC(=O)[C@H](N)Cc2ccccc2)N=C(C2CCCCC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.