β-榄香酮酸
(5β,13α,14β,20S)-3-Oxolanosta-8,24-dien-21-oic acid;Lanosta-8,24-dien-21-oic acid, 3-oxo-, (5β,13α,14β,20S)-;(2S)-6-methyl-2-[(10S,14S,17S)-4,4,10,13,14-pentamethyl-3-oxo-1,2,5,6,7,11,12,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl]hept-5-enoic acid;beta-Elemonic acid
-20℃