1     4  Butane  (Transoid Conformer)
2     1  CH3    0.000001    0.000000    0.000001    83     2
3     2  CH2   -0.000002    0.000000    1.526249    86     1     3
4     3  CH2    1.410672    0.000000    2.108690    86     2     4
5     4  CH3    1.410669    0.000000    3.634938    83     3
6