[
  {
    "molid": "mol10939",
    "smiles": "O=C1CCc2c([N+](=O)[O-])cc([N+](=O)[O-])c(O)c21",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1CCc2c([N+](=O)[O-])cc([N+](=O)[O-])c(O)c21",
        "std_free_energy": -0.5445756912231445,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C1CCc2c([N+](=O)[O-])cc([N+](=O)[O-])c([O-])c21",
        "std_free_energy": -8.759468078613281,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.94,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]