The molecule is a sterol 3-beta-D-glucoside that is 16,23-epoxycholest-24-ene-3,22-diol substituted by a 6-deoxy-alpha-L-mannopyranosyl-(1->2)-beta-D-glucopyranosyl-(1->2)-beta-D-glucopyranosyl moiety at position 3 via a glycosidic linkage (the 3beta,5beta,16beta,22R,23S stereoisomer). Isolated from bulbs of Ornithogalum saundersiae, it exhibits inhibitory activity on proliferation of human peripheral blood lymphocytes. It has a role as a metabolite and an antineoplastic agent. It is a cholestanoid, a cyclic ether, a sterol 3-beta-D-glucoside, a trisaccharide derivative and a 22-hydroxy steroid.
(2S,3R,4R,5R,6S)-2-[(2S,3R,4S,5S,6R)-2-[(2R,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-2-[[(1R,2S,4S,6S,7R,8S,9R,10S,13S,14S,17S,19R)-7-hydroxy-8,10,14-trimethyl-6-(2-methylprop-1-enyl)-5-oxapentacyclo[11.8.0.02,10.04,9.014,19]henicosan-17-yl]oxy]oxan-3-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-methyloxane-3,4,5-triol