Synonyms: 10aH-Ambros-11(13)-en-12-oic acid,1,4b,6b,15-tetrahydroxy-, g-lactone, 4,15-diacetate (8CI);Azuleno[4,5-b]furan-2(3H)-one,9-(acetyloxy)-9a-[(acetyloxy)methyl]decahydro-6a-hydroxy-6-methyl-3-methylene-,[3aS-(3aa,6b,6aa,9b,9ab,9ba)]-; Tetraneurin C