The molecule is a 20-oxo steroid, a 17alpha-hydroxy steroid, a chlorinated steroid, a 3-oxo-Delta(4) steroid and a tertiary alpha-hydroxy ketone. It has a role as an androgen antagonist. It derives from a hydride of a pregnane.
(1S,2S,3S,5R,11R,12S,15R,16S)-15-acetyl-9-chloro-15-hydroxy-2,16-dimethylpentacyclo[9.7.0.02,8.03,5.012,16]octadeca-7,9-dien-6-one