[
  {
    "molid": "mol20178",
    "smiles": "O=[N+]([O-])c1cccc(Nc2c3ccccc3nc3ccccc23)c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=[N+]([O-])c1cccc(Nc2c3ccccc3nc3ccccc23)c1",
        "std_free_energy": -4.997020721435547,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "O=[N+]([O-])c1cccc([NH2+]c2c3ccccc3nc3ccccc23)c1",
        "std_free_energy": -6.704432487487793,
        "relative_population": 0.3674112403405673
      },
      {
        "id": "1_2",
        "charge": 1,
        "smiles": "O=[N+]([O-])c1cccc(Nc2c3ccccc3[nH+]c3ccccc23)c1",
        "std_free_energy": -7.247771263122559,
        "relative_population": 0.6325887596594326
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 6.26,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "Baltruschat ChEMBL"
      }
    ]
  }
]