Using Nc1cc(Br)cnc1Cl, O=S(=O)(Cl)c1ccccc1 to produce O=S(=O)(c1ccccc1)N(c1cc(Br)cnc1Cl)S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.