Showing structure for (3ar,3bs,5ar,9ar,9bs)-1-[(2r,4s)-4-[(2r)-3,3-dimethyloxiran-2-yl]-4-hydroxybutan-2-yl]-3a,3b,6,6,9a-pentamethyl-3h,4h,5h,5ah,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthrene-2,7-dione