20

C          0.69710       -0.68190       -1.03630
C          1.70600       -0.06270       -0.05320
C          4.39190        3.11520        1.39410
C          2.90170        2.59270        3.25240
C          3.48060        2.52560        0.49760
C          1.99040        2.00310        2.35580
C          4.10540        3.14330        2.77240
C          2.28750        1.94670        0.97810
O          4.98470        3.70510        3.63550
O          1.41750        1.34130        0.11020
H          0.27310        0.10220       -1.66380
H         -0.10070       -1.17150       -0.47790
H          1.20420       -1.41490       -1.66380
H          2.69300       -0.10850       -0.51340
H          1.53940       -0.51310        0.92530
H          5.31930        3.54990        1.02120
H          2.67540        2.62280        4.31820
H          3.69910        2.51730       -0.57030
H          1.05340        1.58960        2.72890
H          4.70640        3.52730        4.53690
