2 2 4 trimethylpentane skeletal structure July 8, 2019 16 32 64 128 2 3 4 trimethylpentane skeletal structure 2 methyl 2 butanol 3 methylhexane 2 2 4-trimethyl-3-pentanone 2 2 4 триметилоктан 2 2 4-trimethylpentane structure