    20
 geometry
 C                     0.73376392    -0.73321660     0.00000000
 C                    -0.73376392     0.73321660     0.00000000
 C                     0.73376392     0.73321660     0.00000000
 C                    -0.73376392    -0.73321660     0.00000000
 C                     1.45016081    -1.92430895     0.00000000
 C                    -1.45016081     1.92430895     0.00000000
 C                     1.45016081     1.92430895     0.00000000
 C                    -1.45016081    -1.92430895     0.00000000
 C                     0.70953012    -3.12791158     0.00000000
 C                    -0.70953012     3.12791158     0.00000000
 C                     0.70953012     3.12791158     0.00000000
 C                    -0.70953012    -3.12791158     0.00000000
 H                     2.54062870    -1.95461502     0.00000000
 H                    -2.54062870     1.95461502     0.00000000
 H                     2.54062870     1.95461502     0.00000000
 H                    -2.54062870    -1.95461502     0.00000000
 H                     1.23954644    -4.07991626     0.00000000
 H                    -1.23954644     4.07991626     0.00000000
 H                     1.23954644     4.07991626     0.00000000
 H                    -1.23954644    -4.07991626     0.00000000
