4.beta.-Hydroxywithanolide E 54334-04-2 Ergosta-2,24-dien-26-oic acid, 5,6-epoxy-4,14,17,20,22-pentahydroxy-1-oxo-, .delta.-lactone Ergosta-2,24-dien-26-oic acid, 5,6-epoxy-4,14,17,20,22-pentahydroxy-1-oxo-, .delta.-lactone, (4.beta.,5.beta.,6.beta.,17.alpha.,22R)- NSC212509 WITHANOLIDE E, 4-B-HYDROXY-