2 5 dimethyl 2 5 hexanediol structure July 8, 2019 16 32 64 128 2 5-dimethylhexane 2 5-dimethyl-3-hexyne-2 5-diol 2 5-dimethyl-2 5-hexanediol 2 5-dimethyl-hexanediol 2 5-dimethylhexan