[
  {
    "molid": "mol37046",
    "smiles": "O=C(C[n+]1cccc(C=NO)c1)C[n+]1cccc(C(=O)Nc2ccccc2)c1",
    "microspecies": [
      {
        "id": "1_3",
        "charge": 1,
        "smiles": "O=C(C[n+]1cccc(C=N[O-])c1)C[n+]1cccc(C(=O)Nc2ccccc2)c1",
        "std_free_energy": -2.7817792892456055,
        "relative_population": 0.6768307023930246
      },
      {
        "id": "1_4",
        "charge": 1,
        "smiles": "O=C(C[n+]1cccc(C=NO)c1)C[n+]1cccc(C(=O)[N-]c2ccccc2)c1",
        "std_free_energy": -1.9067274332046509,
        "relative_population": 0.2821303830359446
      },
      {
        "id": "2_1",
        "charge": 2,
        "smiles": "O=C(C[n+]1cccc(C=NO)c1)C[n+]1cccc(C(=O)Nc2ccccc2)c1",
        "std_free_energy": -4.734979629516602,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 9.02999973297119,
        "charge_state_pre": 2,
        "charge_state_post": 1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]