Using COCOc1c(Br)c(C(C)C)cc2cc(OC)ccc12, OB(O)c1ccccc1 to produce COCOc1c(-c2ccccc2)c(C(C)C)cc2cc(OC)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.