[
  {
    "molid": "mol19222",
    "smiles": "O=C(NC1=C(c2ccoc2)C(=O)c2ccccc2C1=O)c1ccccc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(NC1=C(c2ccoc2)C(=O)c2ccccc2C1=O)c1ccccc1",
        "std_free_energy": -6.3336181640625,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([N-]C1=C(c2ccoc2)C(=O)c2ccccc2C1=O)c1ccccc1",
        "std_free_energy": 1.7332658767700195,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 12.1,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]