Using Brc1ccc2[nH]ccc2c1, CC1(C)C(C(=O)Cl)C1(C)C to produce CC1(C)C(C(=O)c2c[nH]c3ccc(Br)cc23)C1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.