MTZ Example
MOLECULES: c1cc(N)ccc1C(=O)O
NAMES:          core
MOLECULES: CO            OCCl
NAMES:          methanol  chloromethanol
TRANSFORMATION:
                [C:1](=[O:2])[O:3][H] . O[C:4] >> [C:1](=[O:2])[O:3][C:4]
MOLECULES: CC(=O)O   BrCC(=O)O
NAMES:          acetic          bromoacetic
TRANSFORMATION:
  [NH2:1][H:99] . [OH:98][C:2]=[O:3] >> [N:1][C:2]=[O:3] . [H:99][OH:98]
ZAPPAT:          [OH2]