The molecule is a 20-oxo steroid, a 3-oxo-Delta(4) steroid, a chlorinated steroid, a steroid ester and an acetate ester. It has a role as an androgen antagonist and a progestin. It derives from a cyproterone.
[(1S,2S,3S,5R,11R,12S,15R,16S)-15-acetyl-9-chloro-2,16-dimethyl-6-oxo-15-pentacyclo[9.7.0.02,8.03,5.012,16]octadeca-7,9-dienyl] acetate