1 4 Butane (Gauche Conformer) 2 1 CH3 -0.027252 -0.207636 -0.000153 83 2 3 2 CH2 0.000938 -0.039679 1.520297 86 1 3 4 3 CH2 1.410746 0.003635 2.117779 86 2 4 5 4 CH3 2.224950 1.231987 1.706691 83 3 6