Using CCCCCC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, O=Cc1cc2cc(Cl)ccc2[nH]1 to produce CCCCCC=Cc1cc2cc(Cl)ccc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.