3 4 diethyl 2 5 5 6 tetramethyloctane July 8, 2019 16 32 64 128 3 4-diethyl-5 6-dimethyl-2-octene 3 methylhexane 3 4 5-trimethylheptan-3 4-diol 3 4-dimetylpent-2-en