12
comment
 C     0.0000   0.0000   0.0000
 C     1.3952   0.0000   0.0000
 C     2.0927   1.2078   0.0000
 C     1.3950   2.4163  -0.0012
 C     0.0002   2.4162  -0.0017
 C    -0.6974   1.2080  -0.0007
 H    -0.5498  -0.9523   0.0004
 H     1.9447  -0.9525   0.0013
 H     3.1924   1.2078   0.0006
 H     1.9452   3.3684  -0.0013
 H    -0.5499   3.3685  -0.0026
 H    -1.7970   1.2082  -0.0009
