The molecule is a withanolide that is 18,22:23,26-diepoxyergosta-1,4-diene substituted by oxo groups at positions 3, 18 and 26. It has been isolated from a Formosan soft coral Paraminabea acronocephala. It has a role as a coral metabolite. It is a gamma-lactone, an enone, an ergostanoid and a withanolide.
(1R,2S,5R,6S,7S,10R,13S,14R)-7-[(2R,3R,4R)-3,4-dimethyl-5-oxooxolan-2-yl]-6,14-dimethyl-8-oxapentacyclo[11.8.0.02,10.05,10.014,19]henicosa-15,18-diene-9,17-dione