18
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C -2.3174689 -0.9506030 -0.4985140
C 1.0653250 -2.0534251 0.5057470
C 1.6461790 -1.1734450 -0.3157860
C 1.2986550 0.2445100 -0.4643550
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H -1.2897440 -1.2184460 -0.7339330
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H 0.5772030 0.5473310 1.4936770
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H 0.3548670 2.7160790 -0.4922190
H -0.2648540 2.6629100 1.0680270