Using CC1(C)[C@@H]2CC[C@@]1(C)c1[nH]n(-c3ccccc3)c(=O)c12, BrCC1CC1 to produce CC1(C)[C@H]2CC[C@]1(C)c1c2c(=O)n(-c2ccccc2)n1CC1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.