Synonyms: 10aH-Ambros-11(13)-en-12-oic acid, 2b,14-epoxy-1,6b-dihydroxy-4-oxo-, g-lactone (8CI);1H-Azuleno[1,8-bc:4,5-b']difuran-1,8(2H)-dione,decahydro-9c-hydroxy-9b-methyl-7-methylene-, (2aR,4aR,6aS,9aR,9bS,9cR)- (9CI);1H-Azuleno[1,8-bc:4,5-b']difuran-1,8(2H)-dione, decahydro-9c-hydroxy-9b-methyl-7-methylene-,[2aR-(2aa,4aa,6aa,9aa,9bb,9ca)]-; Conchosin A