Synonyms: 2H,5H-Pyrano[4,3-b]pyran-2-one,7-(1,3-dimethyl-1-pentenyl)-7,8-dihydro-4,8-dihydroxy-3,8-dimethyl-, [7R-[7a(1E,3S*),8a]]-;2H,5H-Pyrano[4,3-b]pyran-2-one,7-[(1E,3S)-1,3-dimethyl-1-pentenyl]-7,8-dihydro-4,8-dihydroxy-3,8-dimethyl-,(7R,8S)- (9CI); (-)-Neovasinin; Neovasinin