Claenone Cyclopenta[4,5]cycloundec[1,2-b]oxiren-9(1aH)-one, 2,3,6,7,7a,8,10,10a,11,11a-decahydro-1a,5,10a-trimethyl- 8-(1-methylethylidene)-, [1aR-(1aR*,4E,7aS*,10aR*,11aR*)]- Cyclopenta[4,5]cycloundec[1,2-b]oxiren-9(1aH)-one, 2,3,6,7,7a,8,10,10a,11,11a-decahydro-1a,5,10a-trimethyl-8-(1-methylethylidene)-, (1aR,4E,7aS,10aR,11aR)- NSC624589