Synonyms: 9,19-Cyclo-5a,9b-pregnan-20-one, 3b-(dimethylamino)-16a-hydroxy-14-methyl-4-methylene- (7CI,8CI);1H,19H-Cyclopropa[9,10]cyclopenta[a]phenanthrene, 9,19-cyclopregnan-20-onederiv.; Buxippine K; Buxpiine; Buxpiine K; Cyclomicrobuxin; Cyclomicrobuxine;N-Methylbuxtauine M