[
  {
    "molid": "mol37575",
    "smiles": "O=[N+]([O-])c1ccc(/N=N/c2ccc(O)c(O)c2)cc1",
    "microspecies": [
      {
        "id": "-1_3",
        "charge": -1,
        "smiles": "O=[N+]([O-])c1ccc(/N=N/c2ccc(O)c([O-])c2)cc1",
        "std_free_energy": -3.0266387462615967,
        "relative_population": 0.4257504498634896
      },
      {
        "id": "-1_4",
        "charge": -1,
        "smiles": "O=[N+]([O-])c1ccc(/N=N/c2ccc([O-])c(O)c2)cc1",
        "std_free_energy": -3.3258402347564697,
        "relative_population": 0.5742442707969583
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=[N+]([O-])c1ccc(/N=N/c2ccc([O-])c([O-])c2)cc1",
        "std_free_energy": 8.043601036071777,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 11.1000003814697,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]