18

  C      4.319395    0.231422   -0.312042
  C      3.136158   -0.232097    0.163677
  C      1.837599    0.240574   -0.258012
  C      0.647086   -0.233247    0.227922
  C     -0.647131    0.232792   -0.187481
  C     -1.837758   -0.240904    0.298334
  C     -3.136089    0.232087   -0.123667
  C     -4.319693   -0.230946    0.351592
  H      5.280483   -0.166335    0.046136
  H      4.355622    1.025198   -1.076354
  H      3.142772   -1.028955    0.929831
  H      1.816780    1.037573   -1.024053
  H      0.671854   -1.030312    0.993931
  H     -0.671527    1.029856   -0.953498
  H     -1.816891   -1.037899    1.064370
  H     -3.141821    1.028944   -0.889841
  H     -4.356196   -1.024721    1.115909
  H     -5.280643    0.166971   -0.006742