10,13-dimethyl-17-(6-methylheptan-2-yl)spiro[1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dithiolane]

2α-iodocholest-4-en-3-one

胆甾-4-烯

26-hydroxycholest-4-en-3-one