Using O=C(O)CCC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, O=Cc1ccc(Br)c(F)c1 to produce O=C(O)CC/C=C/c1ccc(Br)c(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.