2,4-nonadiene, 8-chloro-6,8-dimethyl- 8-chloro-6,8-dimethylnona-2,4-diene InChI=1/C11H19Cl/c1-5-6-7-8-10(2)9-11(3,4)12/h5-8,10H,9H2,1-4H3/b6-5+,8-7