Using Nc1ccc2[nH]nnc2c1, COc1cc2c(Cl)c(C#N)cnc2cc1OCCCl to produce COc1cc2c(Nc3ccc4nn[nH]c4c3)c(C#N)cnc2cc1OCCCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.