19-Norlanosta-5,23-diene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (2.beta.,9.beta.,10.alpha.,16.alpha.,23E)- 19-nor-9.beta.,10.alpha.-Lanosta-5,23-diene-3,11,22-trione, 9-methyl-2.beta.,16.alpha.,20,25-tetrahydroxy-, 25-acetate 6199-67-3 CUCURBITACIN R - DATISCA PRINCIPLE B Cucurbitacin B Cucurbitacine (B) DATISCACIN Datisca principle B Datiscn Principle B NSC144154