    23
 geometry
 C                     0.00000000     0.00000000    -1.83368324
 C                    -0.73521709     0.00000000     0.45072419
 C                    -1.18488104     0.00000000    -0.88734163
 C                     1.18488104     0.00000000    -0.88734163
 C                     0.73521709     0.00000000     0.45072419
 C                    -1.65251973     0.00000000     1.50590328
 C                    -2.54698564     0.00000000    -1.17380524
 C                     2.54698564     0.00000000    -1.17380524
 C                     1.65251973     0.00000000     1.50590328
 C                    -3.01969947     0.00000000     1.21313486
 C                    -3.46537884     0.00000000    -0.11532180
 C                     3.46537884     0.00000000    -0.11532180
 C                     3.01969947     0.00000000     1.21313486
 H                     0.00000000     0.88096683    -2.49122562
 H                     0.00000000    -0.88096683    -2.49122562
 H                    -1.31422207     0.00000000     2.53945108
 H                    -2.89966092     0.00000000    -2.20322620
 H                     2.89966092     0.00000000    -2.20322620
 H                     1.31422207     0.00000000     2.53945108
 H                    -3.74404886     0.00000000     2.02385286
 H                    -4.53178102     0.00000000    -0.32634179
 H                     4.53178102     0.00000000    -0.32634179
 H                     3.74404886     0.00000000     2.02385286
