[
  {
    "molid": "mol33838",
    "smiles": "O=[N+]([O-])c1ccc(OP(=O)(O)O)cc1",
    "microspecies": [
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=[N+]([O-])c1ccc(OP(=O)([O-])O)cc1",
        "std_free_energy": -12.912185668945312,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=[N+]([O-])c1ccc(OP(=O)([O-])[O-])cc1",
        "std_free_energy": -13.356359481811523,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.38000011444092,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 5.21999979019165,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]