3H-Oxireno[8,8a]azuleno[4,5-b]furan-3,8(4aH)-dione, 5,6,6a,7,9a,9b-hexahydro-1,4a,7-trimethyl-, (3aR,4aS,6aS,7S,9aS,9bR)-
3H-Oxireno[8,8a]azuleno[4,5-b]furan-3,8(4aH)-dione, 5,6,6a,7,9a,9b-hexahydro-1,4a,7-trimethyl-, [4aS-(3aS*,4aα,6aα,7α,9aβ,9bα)]-
(3aR,4aS,6aS,7S,9aS,9bR)-5,6,6a,7,9a,9b-Hexahydro-1,4a,7-trimethyl-3H-oxireno[8,8a]azuleno[4,5-b]furan-3,8(4aH)-dione
(+)-1β,10β-Epoxydesacetoxymatricarin