Synonyms: 2H-Furo[3,2-g][2]benzopyran-2,6(3H)-dione,8a-ethenyloctahydro-4-hydroxy-3,5-bis(methylene)-, (3aa,4a,4aa,8aa,9ab)- (9CI); 2H-Furo[3,2-g][2]benzopyran-2,6(3H)-dione,8a-ethenyloctahydro-4-hydroxy-3,5-bis(methylene)-, (3aa,4a,4aa,8aa,9ab)-(?à)-; (?à)-Vernomenin; NSC 116070