76994-39-3 ACNISTIN E Acnistin-E Androst-2-en-1-one, 5,6-epoxy-4,17-dihydroxy-17-(4-hydroxy-4,5-dimethyl-3-oxo-2-oxabicyclo[3.2.1]oct-7-yl)-, [4.beta.,5.beta.,6.beta.,17.beta.,17(1R,4R,5R,7S)]- NSC324043