Tricoccin S3

Obacunoic acid ε-lactone

Obacunoic acid, eta-lactone

Oxireno[4,4a]-2-benzopyrano[6,5-g][2]benzoxepin-3,5,9(3aH,4bH,6H)-trione,1-(3-furanyl)-1,6a,7,11a,11b,12,13,13a-octahydro-4b,7,7,11a,13a-pentaMethyl-,(1S,3aS,4aR,4bR,6aR,11aR,11bR,13aS)-