Using Cc1c(NC(=O)c2ccc(C(C)(C)C)cc2)cccc1-c1ncnc2c1ccn2S(=O)(=O)c1ccccc1, ClC(Cl)(Br)C(Cl)(Cl)Br to produce Cc1c(NC(=O)c2ccc(C(C)(C)C)cc2)cccc1-c1ncnc2c1cc(Br)n2S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.