1 56L 5-(propan-2-yl)-2-thioxodihydropyrimidine-4,6(1h,5h)-dione 1.000 2 A1BWI 5-ethyl-1,3-diazinane-2,4,6-trione 0.769 3 EDP 5-ethyl-5-[(2r)-pentan-2-yl]-2-thioxodihydropyrimidine-4,6(1h,5h)-dione 0.750