Using CS(=O)(=O)c1ccc(CCl)cc1, O=c1[nH]ccc2cc(Br)ccc12 to produce CS(=O)(=O)c1ccc(Cn2ccc3cc(Br)ccc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.