Synonyms: 3H-Phenaleno[1,2-b]furan-3,7(7aH)-dione,8,9-dihydro-4,6,7a-trihydroxy-5-methoxy-1,8,8,9-tetramethyl-, (7aS-trans)-;3H-Phenaleno[1,2-b]furan-3,7(7aH)-dione,8,9-dihydro-4,6,7a-trihydroxy-5-methoxy-1,8,8,9-tetramethyl-, epimer (8CI);Isoherqueinone