77011-62-2 Acnistin A Androst-2-en-1one, 5,16-epoxy-17-hydroxy-17-(4-hydroxy-4,5-dimethyl-3-oxo-2-oxabicyclo(3.2.1)oct-7-yl)-, (5beta,6beta,17beta,17(1R,4R,5R,7S))-