18 
OA2 molec optimized by B3LYPp2p, symmetrized by D2h
  C        -2.43361000     0.70845900     0.00000000
  C        -1.24478100     1.40250800     0.00000000
  C         0.00000000     0.71689700     0.00000000
  C         1.24478100     1.40250800     0.00000000
  C         2.43361000     0.70845900     0.00000000
  H        -3.37830600     1.24558500     0.00000000
  H        -1.24211000     2.49018900     0.00000000
  H         1.24211000     2.49018900     0.00000000
  H         3.37830600     1.24558500     0.00000000
  C         2.43361000    -0.70845900     0.00000000
  C         1.24478100    -1.40250800     0.00000000
  C         0.00000000    -0.71689700     0.00000000
  C        -1.24478100    -1.40250800     0.00000000
  C        -2.43361000    -0.70845900     0.00000000
  H         3.37830600    -1.24558500     0.00000000
  H         1.24211000    -2.49018900     0.00000000
  H        -1.24211000    -2.49018900     0.00000000
  H        -3.37830600    -1.24558500     0.00000000
