Synonyms: Naphtho[1,2-b]furan-2(3H)-one,3a,4,5,9b-tetrahydro-8-hydroxy-3,9-dimethyl-, (3a,3aa,9ba)-(?à)-; Demethyldesmotroposantonin; Desmotroposantonin,demethyl-; Naphtho[1,2-b]furan-2(3H)-one,3a,4,5,9b-tetrahydro-8-hydroxy-3,9-dimethyl-, (3a,3aa,9ba)-