2 6 octadiene 2 4 dimethyl July 8, 2019 16 32 64 128 2 6-octadiene 2 6-dimethyl- 2 6-dimethyl-7-octen-2-ol 2 6-dimethyl-1 3 5 7-octatetraene 2 6-dimethyloct-3-yne 2 6-octadien-1-ol 3 7-dimethyl- (z)-