Synonyms: Azuleno[4,5-b]furan-2(3H)-one,4-(acetyloxy)-3a,4,5,9,9a,9b-hexahydro-9-hydroxy-3,6,9-trimethyl-, [3S-(3a,3aa,4a,9a,9aa,9bb)]-; Guaia-1(10),2-dien-12-oic acid, 4,6,8-trihydroxy-, 12,6-lactone,8-acetate (8CI); Matricin (6CI); Proazulene (7CI); (-)-Matricin