Using CC(O)c1ccc(Cl)cc1Br, Nc1ccc(-c2ccc(Cl)cc2)cc1 to produce CC(Nc1ccc(-c2ccc(Cl)cc2)cc1)c1ccc(Cl)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.