2 2 4 trimethylpentane condensed structure July 8, 2019 16 32 64 128 2 2 4-trimethylpentane condensed structural formula 2 2 4-trimethylpentane structure 2 2 3 3-tetramethylpentane condensed formula 2 2 3 trimethylpentane structure 2 2 3-trimethylpentane common name