Synonyms: Obacunoicacid, 11-oxo-, e-lactone;Oxireno[4,4a]-2-benzopyrano[6,5-g][2]benzoxepin-5,9,12(1H,3aaH,4bH,6H)-tetrone, 1a-(3-furyl)-6aa,7,11a,11ba,13,13a-hexahydro-4bb,7,7,11ab,13aa-pentamethyl- (8CI); 11-Deoxy-11-oxozapoterin;11-Oxoobacunoic acid e-lactone;Oxireno[4,4a]-2-benzopyrano[6,5-g][2]benzoxepin-3,5,9,12(1H,3aH,4bH,6H)-tetrone,1-(3-furanyl)-6a,7,11a,11b,13,13a-hexahydro-4b,7,7,11a,13a-pentamethyl-, [1R-(1a,3aa,4aR*,4bb,6aa,11ab,11ba,13aa)]-; Zapoterone