
     RDKit          2D

 21 23  0  0  0  0  0  0  0  0999 V2000
    3.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000   -2.5981    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000   -2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7500   -3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.2500   -3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -6.0000   -5.1962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.2500   -6.4952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -6.0000   -7.7942    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7500   -6.4952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000   -7.7942    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000   -5.1962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.2500   -1.2990    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000    2.5981    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0
  2  3  2  0
  3  4  1  0
  4  5  1  0
  5  6  1  0
  6  7  1  0
  7  8  2  0
  8  9  1  0
  9 10  2  0
 10 11  1  0
 10 12  1  0
 12 13  1  0
 12 14  2  0
  6 15  2  0
 15 16  1  0
 15 17  1  0
 17 18  2  0
 18 19  1  0
 19 20  1  0
 19 21  2  0
 21  2  1  0
 18  4  1  0
 14  7  1  0
M  CHG  2   4  -1   5   1
M  END
$$$$

     RDKit          2D

 21 23  0  0  0  0  0  0  0  0999 V2000
    3.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000   -2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000   -2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7500   -3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0000   -5.1962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7500   -6.4952    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000   -5.1962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500   -6.4952    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500   -3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000    2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7500    3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5000    5.1962    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7500    3.8971    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.5000    2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0000    2.5981    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0
  2  3  1  0
  3  4  2  0
  4  5  1  0
  5  6  2  0
  6  7  1  0
  7  8  2  0
  8  9  1  0
  8 10  1  0
 10 11  1  0
 10 12  2  0
  4 13  1  0
 13 14  1  0
 14 15  2  0
 15 16  1  0
 16 17  1  0
 16 18  2  0
 18 19  1  0
 19 20  1  0
 19 21  2  0
 21  2  1  0
 12  5  1  0
 21 14  1  0
M  END
$$$$

     RDKit          2D

 12 11  0  0  0  0  0  0  0  0999 V2000
   -1.2990    0.7500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2990    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2990    2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.5981   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.5981   -1.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.8971    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8971    2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.1962   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.1962   -1.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.4952    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.7942   -0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0
  2  3  1  0
  3  4  1  0
  3  5  1  0
  5  6  1  0
  5  7  1  0
  7  8  1  0
  7  9  1  0
  9 10  1  0
  9 11  1  0
 11 12  1  0
M  END
$$$$
