20

O     -4.141444   -0.622189   -0.648732
C     -3.644708    0.407311    0.105512
O     -4.465983    1.197182    0.645179
C     -2.212854    0.606422    0.294729
C     -1.350538   -0.218030   -0.268415
C      0.095412   -0.097916   -0.135373
C      0.940156   -1.015433   -0.765754
C      2.311179   -0.940113   -0.667268
C      2.914080    0.058647    0.068332
O      4.291070    0.182849    0.202054
C      2.105098    0.979255    0.702085
C      0.717563    0.888125    0.591727
H     -4.990032   -1.122751   -0.346038
H     -1.854511    1.429227    0.896300
H     -1.750844   -1.020027   -0.856455
H      0.524027   -1.818610   -1.355100
H      2.963648   -1.652111   -1.156566
H      4.860253   -0.660038    0.292489
H      2.537625    1.794807    1.300810
H      0.150804    1.623392    1.100482