19-Norlanosta-5,23-diene-11,22-dione, 25-(acetyloxy)-3,16,20-trihydroxy-9-(hydroxymethyl)-, (3.beta.,9.beta.,10.alpha.,16.alpha.,23E)- 19-nor-9.beta.,10.alpha.-Lanosta-5,23-diene-11,22-dione, 3.beta.,16.alpha.,20,25-tetrahydroxy-9-(hydroxymethyl)-, 25-acetate 5988-76-1 CUCURBITACIN C Cucurbitacine (C) NSC94744