2 6 dimethyl 2 trans 6 octadiene July 8, 2019 16 32 64 128 2 6-dimethyl-1 3 5 7-octatetraene 2 6-octadiene 2 6-dimethyl- 2 6-dimethyl-7-octen-2-ol 2 6-dimethyloct-3-yne 2 2-dimethyl-6-ethylheptane