Synonyms: DIHYDROALANTOLACTONE;(3aR)-3aα,5,6,7,8,8a,9,9aα-Octahydro-3β,5β,8aβ-trimethylnaphtho[2,3-b]furan-2(3H)-one;(3S)-3aα,5,6,7,8,8a,9,9aα-Octahydro-3β,5β,8aβ-trimethylnaphtho[2,3-b]furan-2(3H)-one;11,13-Dihydroalantolactone;3β,5β,8aβ-Trimethyl-2,3,3aα,5,6,7,8,8a,9,9aα-decahydronaphtho[2,3-b]furan-2-one