Synonyms: 11H-Benzofuro[2,3-b][1]benzopyran-11-one,5a,10b-dihydro-1,3,8,10b-tetrahydroxy-2-(3-methyl-2-butenyl)-, (5aR,10bS)-rel-(9CI); 11H-Benzofuro[2,3-b][1]benzopyran-11-one,5a,10b-dihydro-1,3,8,10b-tetrahydroxy-2-(3-methyl-2-butenyl)-, cis-; Lupinol C