8

C   -0.601729956  -0.028570118   0.384934916
H   -1.663735430  -0.028526566   0.379014311
C    0.610109174  -0.028663644   0.388163788
H    1.672135444  -0.028793082   0.387967520
C   -0.007359978   0.100337388   4.142811897
H   -0.003965598   0.066602336   3.079515015
C   -0.011296401   0.138627411   5.354277280
H   -0.014562633   0.172003292   6.415188698