Using CC(C)(C)NS(=O)(=O)c1ccc2c(C3CCCCC3)c[nH]c2c1, Br to produce CC(C)(C)NS(=O)(=O)c1ccc2c(C3CCCCC3)c(Br)[nH]c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.