Using CN(C[C@H]1CC[C@H](NC(=O)OCc2ccccc2)CC1)C1CCN(C(=O)OC(C)(C)C)CC1 to produce CN(C[C@H]1CC[C@H](N)CC1)C1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.