Azulene
(2aR,9R)-2a,3,4,4aα,5,8,8aα,8b-Octahydro-2aα,9-dihydroxy-8bα-methyl-9-(1-methylethyl)-5α,8α-methano-1,7-dioxacyclopent[cd]azulene-2,6-dione
(3R)-2,3β,4,5,6,7,8,8aβ-Octahydro-6β-hydroxy-6,8,8-trimethyl-1H-3aα,7α-methanoazulene-3β-carboxylic acid
1,5,8-Azulenetriol,1,2,3,3a,4,5,8,8a-octahydro-3a,6-dimethyl-1-(1-methylethyl)-, [1R-(1a,3aa,5b,8b,8ab)]-