    18
 geometry
 C                     0.71661071     0.00000000     0.00000000
 C                    -0.71661071     0.00000000     0.00000000
 C                     1.40594131     1.23164790     0.00000000
 C                    -1.40594131    -1.23164790     0.00000000
 C                    -1.40594131     1.23164790     0.00000000
 C                     1.40594131    -1.23164790     0.00000000
 C                     0.68862562     2.48092763     0.00000000
 C                    -0.68862562    -2.48092763     0.00000000
 C                    -0.68862562     2.48092763     0.00000000
 C                     0.68862562    -2.48092763     0.00000000
 H                     2.49519853     1.24846153     0.00000000
 H                    -2.49519853    -1.24846153     0.00000000
 H                    -2.49519853     1.24846153     0.00000000
 H                     2.49519853    -1.24846153     0.00000000
 H                     1.24785435     3.41323349     0.00000000
 H                    -1.24785435    -3.41323349     0.00000000
 H                    -1.24785435     3.41323349     0.00000000
 H                     1.24785435    -3.41323349     0.00000000
