The molecule is a tetracyclic triterpenoid that is 4,9-cyclo-9,10-secocholesta-5,24-diene substituted by methyl groups at the 9beta, 10, and 14 positions, and by a hydroxy group at position 1. It derives from a hydride of a cucurbitane.
(3S,8R,9R,10S,13R,14S,17R)-4,4,9,13,14-pentamethyl-17-[(2R)-6-methylhept-5-en-2-yl]-2,3,7,8,10,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol