The molecule is a withanolide that is (22R,25S)-22,26-epoxycholesta-1,4-dien-26-one substituted by an oxo group at position 3 and an acetoxy group at position 18. Isolated from Paraminabea acronocephala, it exhibits anti-inflammatory activity. It has a role as an anti-inflammatory agent and a coral metabolite. It is a delta-lactone, a cholestanoid, an organic heterotetracyclic compound, a withanolide, an enone and an acetate ester.
[(8R,9S,10R,13R,14S,17R)-10-methyl-17-[(1S)-1-[(2R,5S)-5-methyl-6-oxooxan-2-yl]ethyl]-3-oxo-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-13-yl]methyl acetate