6 
ethylene molec optimized by B3LYPp2p, SG=mmm
  C         0.66547500     0.00000000     0.00000000
  C        -0.66547500     0.00000000     0.00000000
  H         1.23957600     0.92358900     0.00000000
  H        -1.23957600    -0.92358900     0.00000000
  H         1.23957600    -0.92358900     0.00000000
  H        -1.23957600     0.92358900     0.00000000
