Synonyms: Butanoicacid,5,6,7,8-tetrahydro-2,3-dimethoxy-6,7-dimethyl-1-oxo-1H,14H-benzo[1,8]cycloocta[1,2,3-cd][1,3]dioxolo[4,5-g]benzofuran-8-ylester, [6R-(6a,7a,8a,14aS*)]-;1H,14H-Benzo[1,8]cycloocta[1,2,3-cd][1,3]dioxolo[4,5-g]benzofuran, butanoicacid deriv.; Kadsulignan H