1 9AA (5s)-5-[(2,4-dimethoxyphenyl)methyl]-5-hydroxy-2-sulfanylideneimidazolidin-4-one 1.000 2 7R1 (5r)-5-[(2,4-dimethoxyphenyl)methyl]-2-sulfanylidene-1,3-thiazolidin-4-one 0.850 3 7QY (5r)-5-[(2,4-dimethoxyphenyl)methyl]-1,3-thiazolidine-2,4-dione 0.762