Using BrCc1ccccc1, CC(=O)c1oc(-c2ccccc2)cc(=O)c1O to produce CC(=O)c1oc(-c2ccccc2)cc(=O)c1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.