17617-46-8 3,6-Methano-8H-1,5,7-trioxacyclopenta(ij)cycloprop(a)azulene-4,8(3H)-dione, hexahydro-2a-hydroxy-8b-methyl-9-(1-methylethyl)-, (1aR-(1aalpha,2abeta,3beta,6beta,6abeta,8aS*,8bbeta,9S*))- Hexahydro-2a-hydroxy-8b-methyl-9-(1-methylethyl)-3,6-methano-8H-1,5,7-trioxacyclopenta(ij)cycloprop(a)azulene-4,8(3H)-dione (1aR-(1aalpha,2abeta,3beta,6beta,6abeta,8aS*,8bbeta,9S*))- Picrotoxinin, alpha-dihydro- dihydropicrotoxinin