The molecule is a tetracyclic triterpenoid that is lanosta-8,24-dien-26-al substituted by oxo groups at positions 3 and 7. Isolated from Ganoderma lucidum and Ganoderma pfeifferi, it exhibits antiviral and cytotoxic activities. It has a role as a metabolite, an antineoplastic agent and an anti-HSV agent. It is a tetracyclic triterpenoid, a cyclic terpene ketone, a 3-oxo-5alpha-steroid, a 7-oxo steroid and a steroid aldehyde. It derives from a hydride of a lanostane.
(E,6R)-2-methyl-6-[(5R,10S,13R,14R,17R)-4,4,10,13,14-pentamethyl-3,7-dioxo-2,5,6,11,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]hept-2-enal