Using OB(O)c1ccc(O)cc1, CC(=O)c1c(O)cc(Br)c2ccccc12 to produce CC(=O)c1c(O)cc(-c2ccc(O)cc2)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.