Using Cc1ccc2c(c1)nc(N)c1ncc(CCc3ccc(C#N)cc3)cc12 to produce Cc1ccc2c(c1)nc(N)c1ncc(CCc3ccc(CN)cc3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.