16

  O     -2.910521   -0.398302   -0.222661
  C     -1.515776   -0.342989   -0.146898
  C     -0.739792   -1.466805    0.064326
  C      0.636372   -1.412144    0.139075
  C      1.265810   -0.169243   -0.005078
  C      2.737569   -0.072590    0.069265
  O      3.295908    1.064668   -0.063716
  C      0.521664    0.974759   -0.217344
  C     -0.870747    0.877494   -0.286829
  O     -1.605308    2.040474   -0.501300
  H     -3.497447    0.008311    0.508838
  H     -1.245858   -2.434069    0.175530
  H      1.217554   -2.319543    0.306898
  H      3.302301   -0.980895    0.236245
  H      1.035396    1.923210   -0.325342
  H     -1.627126    2.707665    0.268992