4 ethyl 2 2 5 trimethylhexane July 8, 2019 16 32 64 128 4 ethyl 2 3 5 trimethylhexane 2 2 4-trimethylhexane 2 4 4-trimethylhexane 3 methylhexane 2 2 5-trimethylhexane 2 3 4-trimethylhexane
