Using Oc1nnc(S)n1-c1ccccc1, O=[N+]([O-])c1cnc(Br)s1 to produce O=[N+]([O-])c1cnc(Sc2nnc(O)n2-c2ccccc2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.