Using COc1cc(Nc2nc3cccc(-c4ccc(C#N)cc4)c3o2)cc(OC)c1OC to produce COc1cc(Nc2nc3cccc(-c4ccc(CN)cc4)c3o2)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.