Using N=C(N)c1cccc(N)c1, NNC(=O)c1nc(Br)cnc1N to produce Nc1cccc(-c2nnc(-c3nc(Br)cnc3N)[nH]2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.