    20
 geometry
 C                     0.72317441    -0.72995910     0.00000000
 C                    -0.72317441     0.72995910     0.00000000
 C                     0.72317441     0.72995910     0.00000000
 C                    -0.72317441    -0.72995910     0.00000000
 C                     1.47161993    -1.91146789     0.00000000
 C                    -1.47161993     1.91146789     0.00000000
 C                     1.47161993     1.91146789     0.00000000
 C                    -1.47161993    -1.91146789     0.00000000
 C                     0.70302597    -3.11656532     0.00000000
 C                    -0.70302597     3.11656532     0.00000000
 C                     0.70302597     3.11656532     0.00000000
 C                    -0.70302597    -3.11656532     0.00000000
 H                     2.55816792    -1.93948890     0.00000000
 H                    -2.55816792     1.93948890     0.00000000
 H                     2.55816792     1.93948890     0.00000000
 H                    -2.55816792    -1.93948890     0.00000000
 H                     1.22663179    -4.06927876     0.00000000
 H                    -1.22663179     4.06927876     0.00000000
 H                     1.22663179     4.06927876     0.00000000
 H                    -1.22663179    -4.06927876     0.00000000
