13
 
 P                  0.00000000    0.00000000    0.61134000
 C                  0.00000000    1.61552100   -0.28240100
 C                 -1.39908200   -0.80776100   -0.28240100
 C                  1.39908200   -0.80776100   -0.28240100
 H                  0.00000000    1.47067100   -1.36485200
 H                 -0.88201100    2.18940500    0.00127700
 H                  0.88201100    2.18940500    0.00127700
 H                  1.27363900   -0.73533600   -1.36485200
 H                  2.33708600   -0.33085900    0.00127700
 H                  1.45507500   -1.85854700    0.00127700
 H                 -1.27363900   -0.73533600   -1.36485200
 H                 -1.45507500   -1.85854700    0.00127700
 H                 -2.33708600   -0.33085900    0.00127700
