[
  {
    "molid": "mol37549",
    "smiles": "O=C(/C=C/c1ccc(O)cc1)Oc1ccc(Cl)cc1[N+](=O)[O-]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(/C=C/c1ccc(O)cc1)Oc1ccc(Cl)cc1[N+](=O)[O-]",
        "std_free_energy": -5.232684135437012,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C(/C=C/c1ccc([O-])cc1)Oc1ccc(Cl)cc1[N+](=O)[O-]",
        "std_free_energy": -2.143951416015625,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 9.4399995803833,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]