Using BrC(Br)(Br)Br, COC(=O)c1ccc(-c2ccc(OC)c(-c3ccc(C(F)(F)F)cc3CO)c2)c(C)c1 to produce COC(=O)c1ccc(-c2ccc(OC)c(-c3ccc(C(F)(F)F)cc3CBr)c2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.