1    14  Butane  (Gauche Conformer)
2     1  C      0.028302   -0.016843   -0.015751     1     2     5     6     7
3     2  C      0.023683   -0.033543    1.518627     1     1     3     8     9
4     3  C      1.430275   -0.031502    2.140062     1     2     4    10    11
5     4  C      2.224304    1.251882    1.862462     1     3    12    13    14
6     5  H     -1.005188   -0.089386   -0.423477     5     1
7     6  H      0.608046   -0.870803   -0.432499     5     1
8     7  H      0.472450    0.919747   -0.419779     5     1
9     8  H     -0.522911   -0.941399    1.865347     5     2
10     9  H     -0.551788    0.842677    1.897282     5     2
11    10  H      2.003882   -0.910759    1.765639     5     3
12    11  H      1.337796   -0.163967    3.243276     5     3
13    12  H      3.206296    1.240592    2.387029     5     4
14    13  H      1.675283    2.155854    2.209506     5     4
15    14  H      2.436132    1.383127    0.778207     5     4
16