ChemicalBook -- 7681-53-0
  -INDIGO-07272515002D
  4  2  0  0  0  0  0  0  0  0999 V2000
    1.5400    1.5400    0.0000 P   0  0  0  0  0  5  0  0  0  0  0  0
    0.0000    1.5400    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.0800    1.5400    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.5400    0.0000    0.0000 Na  0  0  0  0  0 15  0  0  0  0  0  0
  1  2  2  0  0  0  0
  1  3  1  0  0  0  0
M  END