Using COC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, COC(=O)C(=O)c1sccc1Cc1ccccc1 to produce CO/C=C(/C(=O)OC)c1sccc1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.