Using CCCCOc1cc(C=O)ccc1O, COC(=O)C(OC)[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce CCCCOc1cc(/C=C(\OC)C(=O)OC)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.