20

C          0.75440        1.28580       -0.26840
C          1.47650        0.02710        0.20640
C         -0.69650        1.32470        0.19940
C          0.72150       -1.24960       -0.17020
C         -1.45250        0.06410       -0.21800
C         -0.74550       -1.21690        0.25690
O         -2.76900        0.11870        0.33200
O         -0.86360       -1.32260        1.68340
H          0.78350        1.32870       -1.36410
H          1.28300        2.17280        0.09880
H          1.61030        0.07230        1.29360
H          2.48180       -0.00340       -0.22940
H         -1.19920        2.20780       -0.21330
H         -0.73810        1.44760        1.28900
H          1.22650       -2.10580        0.29180
H          0.77440       -1.38320       -1.25770
H         -1.54860        0.04590       -1.30980
H         -1.27000       -2.09000       -0.14670
H         -2.72010       -0.34730        1.19110
H         -0.27060       -0.67060        2.09430
