Synonyms: 7bH-Germacr-1-en-12-oic acid,1,4-epoxy-6b,8b-dihydroxy-3-oxo-, 12,8-lactone, isobutyrate, (11R)-(8CI); Propanoic acid, 2-methyl-,2,3,3a,4,5,6,7,10,11,11a-decahydro-3,6,10-trimethyl-2,7-dioxo-6,9-epoxycyclodeca[b]furan-4-ylester, [3R-(3R*,3aS*,4R*,6R*,10R*,11aR*)]-; 6,9-Epoxycyclodeca[b]furan,propanoic acid deriv.; Calaxin, hexahydro-; Hexahydrocalaxin;Tetrahydrozexbrevin; Zexbrevin A; Zexbrevin, tetrahydro-