2 3 5 6-trimethyloctane July 8, 2019 16 32 64 128 2 3 6 5 ethyl trimethyloctane 2 3 5-trimethyloctane 2 2 5-trimethyloctane 2 3 3-trimethyl-1 4 6-octatriene 2 3 5-trimethylhexane 2 5 5-trimethyl-6-heptyne