Using BrBr, COc1ccc(F)c(-c2ccc(CO)cc2C2=CCCC2(C)C)c1 to produce COc1ccc(F)c(-c2ccc(CBr)cc2C2=CCCC2(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.