Using CC(C)(C)OC(=O)N1CCC(CNC(=O)OCc2ccccc2)(C(=O)Nc2ccccc2)C1 to produce CC(C)(C)OC(=O)N1CCC(CN)(C(=O)Nc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.