Using COC(=O)c1cc(C)cnc1C1=NC(C)(C(C)C)C(=O)N1C(=O)c1ccccc1, O=C1CCC(=O)N1Br to produce COC(=O)c1cc(CBr)cnc1C1=NC(C)(C(C)C)C(=O)N1C(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.