Synonyms: Alkaloid GB10 (8CI); Himbosan-18-oic acid, 16,20-bis(acetyloxy)-14-methoxy-, methyl ester,(14a,16a)-;5,6,9-[1]Butanyl[4]ylidene-5H-benz[6,7]indeno[7a,1-b]pyrrole-10-carboxylicacid, 9,11-bis(acetyloxy)-1,2,3,4,4a,6,7,7a,8,9,11,11a-dodecahydro-1-methoxy-15-methyl-,methyl ester, [1R-(1a,4ab,4bS*,5a,6a,7ab,9a,11a,11aa,12R*,15R*)]-