2,4,6,8-Nonatetraenoic acid, 9-bicyclo(2.2.1)hept-2-yl-3,7-dimethyl-, ethyl ester, (1alpha,2alpha(2E,4E,6E,8E),4alpha)- 79056-05-6 Ethyl 9-bicyclo(2.2.1)hept-2-yl-3,7-dimethyl-2,4,6,8-nonatetraenoate (1alpha,2alpha(2E,4E,6E,8E),4alpha)- Ethyl trans-9-(exo-2-bicyclo(2,2,1)heptyl)-3,7-dimethyl-2,4,6,8-nonatetraenoate