13

C    0.000000000  -0.063744210   2.420540900
C    0.000000000   0.781335720  -1.135439120
H    0.000000000   1.021693960   2.342380380
H    0.888283070  -0.461319110   1.933071940
H   -0.888283070  -0.461319110   1.933071940
H    0.000000000  -0.353636060   3.469451950
H    0.000000000   1.374653490  -2.051144420
H   -0.880430020   1.063105540  -0.555809180
C    0.000000000  -0.713328900  -1.447236860
H    0.880430020   1.063105540  -0.555809180
H    0.000000000  -1.306418120  -0.531406930
H   -0.881003430  -0.995330720  -2.025871540
H    0.881003430  -0.995330720  -2.025871540