graphkit-learn/datasets/Acyclic/methyl_1-methylbutyl_ether.ct

 7 6
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 C
    0.0000    0.0000    0.0000 O
  1  4  1  1
  2  6  1  1
  3  7  1  1
  4  5  1  1
  5  6  1  1
  6  7  1  1