Using Cc1ccnc(Nc2cccc(-c3cnc(C=Cc4ccc(C#N)cc4)o3)n2)c1 to produce Cc1ccnc(Nc2cccc(-c3cnc(CCc4ccc(C#N)cc4)o3)n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.