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