8
C#CC=C
C      2.013739    0.421960   -0.484154
C      0.927781   -0.052175   -0.262095
C     -0.367181   -0.618894    0.002572
C     -1.394558    0.155778    0.332644
H      2.966993    0.838289   -0.679064
H     -0.500536   -1.690481   -0.069564
H     -1.283053    1.230745    0.410518
H     -2.363184   -0.285223    0.528936
