Using CC(C)(C)OC(=O)N[C@@H]1CN(C(=O)OCc2ccccc2)C[C@@H]1C1CC1 to produce CC(C)(C)OC(=O)N[C@@H]1CNC[C@@H]1C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.