20

C          0.87510       -0.03430        0.01270
C          3.08900        1.17770       -0.06100
C          5.23260       -2.49680       -0.12770
C          4.48240        1.17200       -0.12250
C          6.56230       -2.44740       -0.24950
C          3.07720       -1.24630       -0.02210
C          2.37570       -0.02910       -0.01960
C          4.47240       -1.25850       -0.09190
C          5.15520       -0.04600       -0.14670
C          7.30240       -1.17580       -0.33560
O          8.52020       -1.17130       -0.47260
O          6.55930       -0.00690       -0.24820
H          0.46890        0.98200       -0.01910
H          0.51680       -0.51380        0.92880
H          0.48480       -0.57640       -0.85500
H          2.56270        2.13000       -0.05530
H          4.70780       -3.44340       -0.06420
H          5.03510        2.10610       -0.16330
H          7.16530       -3.34600       -0.29380
H          2.52390       -2.18230        0.01710
