[
  {
    "molid": "mol38242",
    "smiles": "Oc1ccc2nc3ccc(Cl)cc3nc2c1",
    "microspecies": [
      {
        "id": "0_3",
        "charge": 0,
        "smiles": "Oc1ccc2nc3ccc(Cl)cc3nc2c1",
        "std_free_energy": -6.160089492797852,
        "relative_population": 0.999944444689757
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]c1ccc2nc3ccc(Cl)cc3nc2c1",
        "std_free_energy": -4.458425045013428,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.90000009536743,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]