Using Cc1cc(Br)c(N)c(Br)c1, N#Cc1ccc(Nc2nccc(Cl)n2)cc1 to produce Cc1cc(Br)c(Nc2ccnc(Nc3ccc(C#N)cc3)n2)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.