Using CCOC(=O)Cc1cc(Br)cc(OCc2ccccc2)c1, OB(O)c1ccccc1 to produce CCOC(=O)Cc1cc(OCc2ccccc2)cc(-c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.