Using CCC(=O)OC(=O)CC, O=C(Cc1ccccc1)c1cc(Br)ccc1O to produce CCc1oc2ccc(Br)cc2c(=O)c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.