[
  {
    "molid": "mol12163",
    "smiles": "O=C(O)c1cc(N=Nc2ccccc2[N+](=O)[O-])c2ccccc2c1O",
    "microspecies": [
      {
        "id": "-1_3",
        "charge": -1,
        "smiles": "O=C([O-])c1cc(N=Nc2ccccc2[N+](=O)[O-])c2ccccc2c1O",
        "std_free_energy": -11.695503234863281,
        "relative_population": 0.9985296553760744
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=C([O-])c1cc(N=Nc2ccccc2[N+](=O)[O-])c2ccccc2c1[O-]",
        "std_free_energy": -3.5181431770324707,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 11.69,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]