2 3 4 5 6 7 hexamethyloctane July 8, 2019 16 32 64 128 2 3 4 5 6 7 hexamethyl octane 2 3 4 5 6 7 hexamethyl octane structural formula 2 3 4 5 6 7 hexamethyl octane structure 2 4 6-octatriene 2 6-dimethyl- (e z)- 2 2 3 3 4 4-hexamethylpentane 2 3 5-trimethyloctane