Using Cc1cc2c(s1)Nc1ccc(C#N)cc1N=C2N1CCN(C)CC1 to produce Cc1cc2c(s1)Nc1ccc(CN)cc1N=C2N1CCN(C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.