Using OB(O)c1ccc(O)cc1, COC(=O)c1ccc(OCc2ccccc2)c(Br)c1 to produce COC(=O)c1ccc(OCc2ccccc2)c(-c2ccc(O)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.