The molecule is a withanolide that is (22R)-22,26-epoxyergosta-1,4,24-triene substituted by oxo groups at positions 3 and 26 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 withanolide, a delta-lactone, an organic heterotetracyclic compound, an acetate ester, an ergostanoid and a 3-oxo-Delta(1),Delta(4)-steroid.
[(8R,9S,10R,13R,14S,17R)-17-[(1S)-1-[(2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]ethyl]-10-methyl-3-oxo-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-13-yl]methyl acetate