1 RJI 2,4,6-trioxo-1-phenyl-hexahydropyrimidine-5-carboxamide 1.000 2 A1B16 (3s)-6-oxo-1-phenylpiperidine-3-carboxamide 0.789 3 XWS (2r,4r)-1-phenylhexahydropyrimidine-2,4-diol 0.778 4 A1B4H (3s)-1-[2-(methylsulfanyl)phenyl]-6-oxopiperidine-3-carboxamide 0.714