Using COC(=O)C(Cl)(Cl)CCCCCCCCCC(O)c1ccc(Cl)cc1 to produce COC(=O)C(Cl)(Cl)CCCCCCCCC=Cc1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.