20

C    -1.50351    0.66788   -0.11327
H    -1.77334    1.55222   -0.64265
C    -0.35979    0.40886    0.47599
H    -0.25689   -0.53611    0.97096
C     0.80902    1.35159    0.47768
H     1.12297    1.52181    1.50300
H     0.51522    2.30632    0.05782
N    -2.57645   -0.30287   -0.08810
O    -2.39829   -1.39059    0.50100
O    -3.61877    0.03594   -0.67381
C     2.00766    0.78087   -0.32435
H     2.76318    1.55651   -0.39649
H     1.68212    0.54880   -1.33271
C     2.63862   -0.46866    0.31910
H     1.91106   -1.27127    0.36785
H     2.93488   -0.23508    1.33715
C     3.86719   -0.95229   -0.47562
H     4.62538   -0.17765   -0.51593
H     4.30434   -1.83054   -0.01478
H     3.58768   -1.20735   -1.49208
