Synonyms: A-Norestra-3(5),9,11-trien-2-one,17-(acetyloxy)-, (17b)-; A-Norestra-3(5),9,11-trien-2-one, 17b-hydroxy-, acetate (8CI);Dicyclopenta[a,f]naphthalen-2(3H)-one,6-(acetyloxy)-5a,6,7,8,8a,8b,9,10-octahydro-5a-methyl-, [5aS-(5aa,6a,8ab,8ba)]-; RU 2587