6

H  0.00000000000  0.00000000000  0.00000000000
H  1.00000000000  1.73205080757  0.00000000000
H  2.00000000000  0.00000000000  0.00000000000
H  3.00000000000  1.73205080757  0.00000000000
H  4.00000000000  0.00000000000  0.00000000000
H  2.00000000000  3.46410161514  0.00000000000