Using C=CC1OC(O)c2ccc(C(F)(F)F)cc21, [PH3+]C(c1ccccc1)(c1ccccc1)c1ccccc1 to produce C=Cc1ccc(C(F)(F)F)cc1C(O)C=C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.