17
 comment:c
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C -1.1928790 -0.2658970 -0.6099960
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C 1.9388080 -0.3497420 -0.6250100
C 1.8619460 1.1070091 -0.5677490
H 1.3094310 -2.2565529 0.0508050
H 2.5032799 -0.7716340 -1.4553100
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H 0.7469290 -0.8330280 1.0724250
H 0.6340660 1.3252209 1.1553820
H 2.3729920 1.6507030 -1.3612680
H 1.0377311 2.8801780 0.2496140
H -1.4924510 1.7117840 0.0882250
C -1.7469521 -0.9014090 0.5500140
N -2.2245021 -1.4032561 1.4789530