Using CC(C)[C@H](CO)Cc1ccc(C(C)(C)C)cc1, O=C1CCC(=O)N1Br to produce CC(C)[C@H](CBr)Cc1ccc(C(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.