Using O=COC(CCl)(CC(Cl)(Cl)Cl)c1cc(Cl)cc(Cl)c1 to produce OC(CCl)(CC(Cl)(Cl)Cl)c1cc(Cl)cc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.