76994-39-3 Acnistin E Androst-2-en-1-one, 5,6-epoxy-4,17-dihydroxy-17-(4-hydroxy-4,5-dimethyl-3-oxo-2-oxobicyclo(3.2.1)oct-7-yl)-, (4beta,5beta,6,beta,17beta,17(1R,4R,5R,7S))- NSC 324043