Using COC(=O)C1C(=O)c2ccccc2OC1(C)c1ccc(Cl)c(Cl)c1 to produce COC(=O)C1C(O)c2ccccc2OC1(C)c1ccc(Cl)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.