Showing structure for (3bs,5ar,6s,6ar,10s,10as,10bs,11bs)-10-(acetyloxy)-6a-hydroxy-7,7,10a-trimethyl-4-oxo-3bh,5h,5ah,6h,8h,9h,10h,10bh,11h,11bh-acephenanthryleno[2,3-b]furan-6-yl acetate