Using COC(=O)c1cc(CO)ccc1Cc1ccc(F)cc1, BrC(Br)(Br)Br to produce COC(=O)c1cc(CBr)ccc1Cc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.