[
  {
    "molid": "mol818",
    "smiles": "O=C(O)c1cc(/N=N/c2ccc(Cl)cc2)ccc1O",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "O=C(O)c1cc(/N=N/c2ccc(Cl)cc2)ccc1O",
        "std_free_energy": -2.313384771347046,
        "relative_population": 0.992597967229449
      },
      {
        "id": "-1_3",
        "charge": -1,
        "smiles": "O=C([O-])c1cc(/N=N/c2ccc(Cl)cc2)ccc1O",
        "std_free_energy": -11.746953964233398,
        "relative_population": 0.9996627278879849
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.5,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Hunt"
      }
    ]
  }
]