Synonyms: Oxireno[6,7]cyclonona[1,2-c]pyran-4,10-diol,7-[1,2-bis(acetyloxy)-2-(3,3-dimethyloxiranyl)ethyl]-1a,2,3,3a,4,7a,8,9,10,10a-decahydro-10-methyl-3-methylene-,4-acetate, [1aR*,3aR*,4R*,7[1R*,2R*(R*)],7aS*,10S*,10aR*]-(-)-;(-)-Helioxenicin A; Helioxenicin A