1,2-Dehydroelatericin A 19-Norlanosta-1,5,23-triene-3,11,22-trione, 2,16,20,25-tetrahydroxy-9-methyl-, (9.beta.,10.alpha.,16.alpha.)- 19-nor-9.beta.,10.alpha.-Lanosta-1,5,23-triene-3,11,22-trione, 9-methyl-2,16,20,25-tetrahydroxy- 2222-07-3 CUCURBITACIN I Cucurbitacine (i) Elatericin B NSC521777