2 3 5-trimethyloctane July 8, 2019 16 32 64 128 4 ethyl 2 3 5 trimethyloctane 2 3 6 5 ethyl trimethyloctane 5 ethyl 2 3 3 trimethyloctane 5-ethyl-2 3 7-trimethyloctane 2 2 5-trimethyloctane 2 3 5-trimethylhexane 3 5 5-trimethyloctane