Using COc1cc(C)ccc1C(=O)NS(C)(=O)=O, O=C1CCC(=O)N1Br to produce COc1cc(CBr)ccc1C(=O)NS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.