Synonyms: 4H-6,3-Methenofuro[3,2-c]bisoxireno[f,h]oxacycloundecin-4,8(6H)-dione,1a,1b,2a,6a,7,9a,10,10a-octahydro-7,10a-dimethyl-,[1aS-(1aR*,1bS*,2aS*,6S*,6aS*,7S*,9aR*,10aR*)]-; Germacr-4-ene-12,15-dioicacid, 1a,10:2a,3a-diepoxy-6a,8a-dihydroxy-, di-g-lactone (8CI); 11bH,13-Dihydromikanolide;Dihydromikanolide; Mikanolide, dihydro-