The molecule is a 20-oxo steroid that is the cyclic ketal resulting from the formal condensation of the hydroxy groups of algestone with acetophenone. It is a 3-oxo-Delta(4) steroid, a 20-oxo steroid and a cyclic ketal. It derives from an algestone.
(1R,2S,4R,8S,9S,12S,13R)-8-acetyl-6,9,13-trimethyl-6-phenyl-5,7-dioxapentacyclo[10.8.0.02,9.04,8.013,18]icos-17-en-16-one