2 2 4 trimethylpentane line structure July 8, 2019 16 32 64 128 2 2 4 trimethylpentane bond line structure 2 2 4-trimethylpentane structure 2 2 4 trimethylpentane 2 2 3 trimethylpentane structure 2 2 4-trimethylpentane structural formula