19

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C -1.98334 1.78413 -1.66657
C -3.67728 1.29897 0.11017
C 2.51116 -0.00524 -0.15883
H -1.86212 -0.41020 1.03189
H -1.96399 -0.78483 -0.68029
H -1.70638 2.06330 0.44055
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H -0.92073 1.88578 -1.91015
H -2.45182 2.76048 -1.83207
H -4.21092 0.57964 -0.52112
H -4.12846 2.28505 -0.04403
H -3.84093 1.01863 1.15642
H 2.91805 -1.02089 -0.18003
H 2.94050 0.50901 0.70648
H 2.85548 0.51181 -1.05976