Using CI, COC(=O)c1cc(Br)cc(C)c1NS(=O)(=O)c1ccc(OC)cc1 to produce COC(=O)c1cc(Br)cc(C)c1N(C)S(=O)(=O)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.