Using ClCc1ccc(Cl)cc1, CC(=O)Cc1cc(Cl)cc(Br)c1 to produce CC(=O)C(Cc1ccc(Cl)cc1)c1cc(Cl)cc(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.