11 13
   -6.8304    3.9723    0.0000 C
   -7.5448    3.5598    0.0000 C
   -7.5448    2.7348    0.0000 C
   -6.8304    2.3223    0.0000 C
   -6.1159    2.7348    0.0000 C
   -6.1159    3.5598    0.0000 C
   -6.0938    4.5518    0.0000 O
   -7.6343    2.0545    0.0000 C
   -8.4312    1.8409    0.0000 C
   -7.6343    1.2295    0.0000 C
   -7.4138    4.5557    0.0000 C
   1    2    1    1
   2    3    1    1
   3    4    1    1
   4    5    1    1
   5    6    1    1
   1    6    1    1
   1    7    1    1
   3    8    1    1
   4    8    1    1
   8    9    1    1
   8   10    1    1
   1   11    1    1
   6    7    1    1