Using BrC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, CC(C)(C=O)c1ccc(C(F)(F)F)cc1 to produce CC(C)(/C=C/Br)c1ccc(C(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.