1    14  Butane  (Gauche Conformer)
2     1  C       1
3     2  C       1     1   1.53448
4     3  C       1     2   1.53775     1  113.6610
5     4  C       1     3   1.53448     2  113.6610     1   65.1455     0
6     5  H       5     1   1.11338     2  111.2649     3  176.1035     0
7     6  H       5     1   1.11312     2  111.5672     5  107.2395     1
8     7  H       5     1   1.11252     2  111.9319     5  107.0041    -1
9     8  H       5     2   1.11498     1  108.7405     3  108.8946     1
10     9  H       5     2   1.11459     1  109.4329     3  109.5079    -1
11    10  H       5     3   1.11459     2  109.5079     4  109.4328     1
12    11  H       5     3   1.11498     2  108.8946     4  108.7405    -1
13    12  H       5     4   1.11338     3  111.2649     2  176.1036     0
14    13  H       5     4   1.11312     3  111.5672    12  107.2395     1
15    14  H       5     4   1.11252     3  111.9319    12  107.0041    -1
16