Using CN1CC(C(=O)OC(C)(C)C)NC1=O, O=C(O)[C@@H]1CNC(=O)N1C(=O)OCc1ccccc1 to produce CN1CC(C(=O)OC(C)(C)C)N(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.