The molecule is a triterpenoid saponin that is (23Z)-24-methyllanosta-8,23,25-trien-21-oic acid substituted by an acetyloxy group at position 3 and a beta-D-xylopyranosyl residue at position 21 via a glycosidic linkage. It has been isolated from the fruit bodied of Ganoderma tsugae and exhibits cytotoxic activity against several different cancer cell lines. It has a role as an antineoplastic agent and a fungal metabolite. It is a triterpenoid saponin, an acetate ester and a monosaccharide derivative. It derives from a hydride of a lanostane.
[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl] (2R,4Z)-2-[(3R,5R,10S,13R,14R,17R)-3-acetyloxy-4,4,10,13,14-pentamethyl-2,3,5,6,7,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-17-yl]-5,6-dimethylhepta-4,6-dienoate