Dimepregnen
Dimepregnen ( INN , BAN ) ( developmental code name ST-1411 ) , or 6α , 16α-dimethylpregn-4-en-3β-ol-20-one , is a pregnene steroid described as an antiestrogen that was synthesized in 1968 and was never marketed . 
<triplet> pregnene <subj> steroid <obj> subclass of