Using C[S-], COC(=O)c1cc(S(=O)(=O)c2cncc(Br)c2)c([N+](=O)[O-])s1 to produce COC(=O)c1cc(S(=O)(=O)c2cncc(Br)c2)c(SC)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.