7
 
 C                  0.00000000    0.00000000    0.00000000
 B                  0.00000000    0.00000000    1.43043000
 B                  0.00000000    0.00000000   -1.43043000
 H                  0.00000000    1.04834700    1.99345500
 H                  0.00000000   -1.04834700    1.99345500
 H                  0.00000000    1.04834700   -1.99345500
 H                  0.00000000   -1.04834700   -1.99345500 
