Synonyms: 1H-3a,6-Methanoazulene-3-carboxylicacid, octahydro-7,7-dimethyl-8-methylene-, methyl ester, [3S-(3a,3aa,6a,8aa)]-; 1H-3ab,6-Methanoazulene-3-carboxylicacid, 2,3b,4,5,6a,7,8,8aa-octahydro-7,7-dimethyl-8-methylene-, methyl ester (8CI); Khusenic acid,methyl ester (6CI); Methyl ziza-6(13)-en-12-oate; Methyl zizanoate