Using Sc1ncnc2[nH]c(-c3ccccc3)cc12, O=[N+]([O-])c1ccc(Br)s1 to produce O=[N+]([O-])c1ccc(Sc2ncnc3[nH]c(-c4ccccc4)cc23)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.