4 
acetylene molec optimized by B3LYPp2p, SG=mmm, CO=[12,pa=[1]]
  C         0.60248300     0.00000000     0.00000000
  C        -0.60248300     0.00000000     0.00000000
  H         1.66911800     0.00000000     0.00000000
  H        -1.66911800     0.00000000     0.00000000
