The molecule is a triterpenoid saponin with an arborinane-type terpenoid as the aglycone. It has been isolated from the roots of Rubia yunnanensis. It has a role as an antineoplastic agent and a plant metabolite. It is an acetate ester, a diol, a beta-D-glucoside, a pentacyclic triterpenoid, a triterpenoid saponin and a disaccharide derivative.
[(1R,3S,3aR,5aS,5bS,6S,7aR,9S,11aS,13aR,13bR)-1,6-dihydroxy-5a,8,8,11a,13a-pentamethyl-3-propan-2-yl-9-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxy-1,2,3,4,5,5b,6,7,7a,9,10,11,13,13b-tetradecahydrocyclopenta[a]chrysen-3a-yl]methyl acetate