8

H   -0.000000000  -1.667865000  -1.750000000
H    0.000000000   1.667865000  -1.750000000
C   -0.000000000  -0.603397000  -1.750000000
C    0.000000000   0.603397000  -1.750000000
H   -0.000000000  -1.667865000   1.750000000
H    0.000000000   1.667865000   1.750000000
C   -0.000000000  -0.603397000   1.750000000
C    0.000000000   0.603397000   1.750000000