[
  {
    "molid": "mol9037",
    "smiles": "CC(O[N+](=O)[O-])C(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "C[C@@H](O[N+](=O)[O-])C(=O)O",
        "std_free_energy": -1.8382190465927124,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "C[C@@H](O[N+](=O)[O-])C(=O)[O-]",
        "std_free_energy": -11.850534439086914,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.39,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 2.39000010490417,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]