Using COC(=O)C(C)Br, Oc1ccc(COc2ccc(Cl)cc2Cl)cc1 to produce COC(=O)C(C)Oc1ccc(COc2ccc(Cl)cc2Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.