Using COc1ccc(C=O)cc1, O=C(O)CC[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce COc1ccc(/C=C/CC(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.