13

C        1.0000000000      1.3915000000      0.0000000000                 
C        1.0000000000      0.6957500000      1.2050700000                 
C        1.0000000000     -0.6957500000      1.2050700000                 
C        1.0000000000     -1.3915000000      0.0000000000                 
C        1.0000000000     -0.6957500000     -1.2050700000                 
C        1.0000000000      0.6957500000     -1.2050700000                 
H        1.0000000000      2.4715000000      0.0000000000                 
H        1.0000000000      1.2357500000      2.1403800000                 
H        1.0000000000     -1.2357500000      2.1403800000                 
H        1.0000000000     -2.4715000000      0.0000000000                 
H        1.0000000000     -1.2357500000     -2.1403800000                 
H        1.0000000000      1.2357500000     -2.1403800000                 
Ar       4      0.0000000000      0.0000000000                 