Using CCOC(=O)C(C)(CC)Oc1ccc(C=O)cc1, CC(=O)c1ccc(Br)cc1 to produce CCOC(=O)C(C)(C)Oc1ccc(C=CC(=O)c2ccc(Br)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.