4026-96-4 5.beta.-Bufa-20,22-dienolide, 14,15.beta.-epoxy-3.beta.,16.beta.-dihydroxy-, 3-acetate Bufa-20,22-dienolide, 3-(acetyloxy)-14,15-epoxy-16-hydroxy-, (3.beta.,5.beta.,15.beta.,16.beta.)- NSC237024