    23
 geometry
 C                     0.00000000     0.00000000    -1.86698173
 C                    -0.71250616     0.00000000     0.44284858
 C                    -1.17744216     0.00000000    -0.91903583
 C                     1.17744216     0.00000000    -0.91903583
 C                     0.71250616     0.00000000     0.44284858
 C                    -1.62971843     0.00000000     1.52820938
 C                    -2.53226110     0.00000000    -1.18748431
 C                     2.53226110     0.00000000    -1.18748431
 C                     1.62971843     0.00000000     1.52820938
 C                    -2.98018252     0.00000000     1.24317499
 C                    -3.43033533     0.00000000    -0.10287633
 C                     3.43033533     0.00000000    -0.10287633
 C                     2.98018252     0.00000000     1.24317499
 H                     0.00000000     0.88071201    -2.52319016
 H                     0.00000000    -0.88071201    -2.52319016
 H                    -1.27690816     0.00000000     2.55498051
 H                    -2.90885174     0.00000000    -2.20624141
 H                     2.90885174     0.00000000    -2.20624141
 H                     1.27690816     0.00000000     2.55498051
 H                    -3.71001753     0.00000000     2.04664144
 H                    -4.49891571     0.00000000    -0.29937817
 H                     4.49891571     0.00000000    -0.29937817
 H                     3.71001753     0.00000000     2.04664144
