6

C    -0.66296    0.00000   -0.00000
C     0.66296    0.00000   -0.00000
H    -1.25654   -0.92404   -0.00000
H    -1.25657    0.92401    0.00002
H     1.25654    0.92404    0.00002
H     1.25657   -0.92401   -0.00003
