[
  {
    "molid": "mol32511",
    "smiles": "O=C(O)C1CC1c1cccc([N+](=O)[O-])c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)[C@@H]1C[C@H]1c1cccc([N+](=O)[O-])c1",
        "std_free_energy": -4.02126407623291,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])[C@@H]1C[C@H]1c1cccc([N+](=O)[O-])c1",
        "std_free_energy": -9.239033699035645,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.4099998,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]