Using COC(=O)[C@H](CNC(=O)OC(C)(C)C)N1CCN(C(=O)OCc2ccccc2)CC1 to produce COC(=O)C(CN)N1CCN(C(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.