[
  {
    "molid": "mol923",
    "smiles": "Cc1c([N+](=O)[O-])cc(C(=O)O)cc1[N+](=O)[O-]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1c([N+](=O)[O-])cc(C(=O)O)cc1[N+](=O)[O-]",
        "std_free_energy": -1.561399221420288,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "Cc1c([N+](=O)[O-])cc(C(=O)[O-])cc1[N+](=O)[O-]",
        "std_free_energy": -10.854320526123047,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.97,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 2.97000002861023,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]