Complex sentence: Cyproterone acetate is a 6-chloro-1,2-methylene derivative of 17 α-acetoxyprogesterone, shows major antiandrogenic activity together with androgenic activities.
Split into simpler sentences: Cyproterone acetate is a 6-chloro-1,2-methylene derivative of 17 α-acetoxyprogesterone. It shows major antiandrogenic activity together with androgenic activities.