18
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C -2.2487941 -1.1557781 -0.4215270
C 0.8443510 -1.9995110 0.4557270
C 1.4344140 -1.1371440 -0.3793850
C 1.3084360 0.3225850 -0.4088610
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H 1.8006949 0.8381170 -1.2337040
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H -0.2685130 2.8154211 0.9561640