11

C  0.0000  0.0000  0.0000
C  0.8495  1.2641  0.0000
C  0.8495 -1.2641  0.0000
H -0.6540  0.0000 -0.8757
H -0.6540  0.0000  0.8757
H  0.2313  2.1628  0.0000
H  0.2313 -2.1628  0.0000
H  1.4930  1.2972 -0.8818
H  1.4930  1.2972  0.8818
H  1.4930 -1.2972  0.8818
H  1.4930 -1.2972 -0.8818