[
  {
    "molid": "mol22253",
    "smiles": "O=C(O)C(/C=N/O)=N/O",
    "microspecies": [
      {
        "id": "0_5",
        "charge": 0,
        "smiles": "O=C(O)C(/C=N/O)=N/O",
        "std_free_energy": -3.3106274604797363,
        "relative_population": 0.987455954479315
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "O=C([O-])C(/C=N/O)=N/O",
        "std_free_energy": -11.80860710144043,
        "relative_population": 0.9987234366290151
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.55,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]