Synonyms: (3aS)-3a,4,5,5aα,6,7,8,9,9a,9bα-Decahydro-3aα,6,6,9aβ-tetramethylnaphtho[2,1-b]furan-2(1H)-one;(3aS)-3aα,6,6,9aβ-Tetramethyl-3a,4,5,5aα,6,7,8,9,9a,9bα-decahydronaphtho[2,1-b]furan-2(1H)-one;(3aS,5aα,9bα)-Dodecahydro-3aα,6,6,9aβ-tetramethylnaphtho[2,1-b]furan-2-one;8-Epinorambreinolide;8-epi-Norambreinolide