The molecule is a steroid saponin that is 3,16,17-trihydroxycholest-5-en-22-one attached to a beta-D-glucopyranosyl residue at position 3 and a 2-O-acetyl-3-O-[2-O-(3,4,5-trimethoxybenzoyl)-beta-D-xylopyranosyl]-alpha-L-arabinopyranosyl residue at position 16 via a glycosidic linkage. Isolated from Ornithogalum thyrsoides, it exhibits antineoplastic activity. It has a role as a metabolite and an antineoplastic agent. It is a beta-D-glucoside, a steroid saponin, a cholestanoid, a benzoate ester, an acetate ester and a 17-hydroxy steroid. It derives from a 3,4,5-trimethoxybenzoic acid.
[(2S,3R,4S,5R)-2-[(2S,3R,4S,5S)-3-acetyloxy-5-hydroxy-2-[[(3S,8R,9S,10R,13S,14S,16S,17S)-17-hydroxy-10,13-dimethyl-17-[(2R)-6-methyl-3-oxoheptan-2-yl]-3-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-16-yl]oxy]oxan-4-yl]oxy-4,5-dihydroxyoxan-3-yl] 3,4,5-trimethoxybenzoate