Using CC(C)(C)OC(=O)N(Cc1ccc(C#N)cc1CO)C1CCCc2cccnc21 to produce CC(C)(C)OC(=O)N(Cc1ccc(CN)cc1CO)C1CCCc2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.