19-Nor-9.beta.,10.alpha.-lanosta-5,23-diene-3,11,22-trione, 2.beta.,16.alpha.,20,25-tetrahydroxy-9-(hydroxymethyl)-,25-acetate, (E)- 19-Norlanosta-5,23-diene-3,11,22-trione, 2,16,20,25-tetrahydroxy-9-(hydroxymethyl)-, 25-acetate 19-Norlanosta-5,23-diene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-(hydroxymethyl)-,(2.beta.,9.beta.,10.alpha.,16.alpha.,23E)- 6040-19-3 Cucurbitacin A Cucurbitacine A NSC94743