[
  {
    "molid": "mol37147",
    "smiles": "O=P(O)(O)C1(P(=O)(O)O)Oc2ccccc2O1",
    "microspecies": [
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=P([O-])(O)C1(P(=O)(O)O)Oc2ccccc2O1",
        "std_free_energy": -9.745975494384766,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=P([O-])([O-])C1(P(=O)(O)O)Oc2ccccc2O1",
        "std_free_energy": -13.170222282409668,
        "relative_population": 0.31979044607191237
      },
      {
        "id": "-2_2",
        "charge": -2,
        "smiles": "O=P([O-])(O)C1(P(=O)([O-])O)Oc2ccccc2O1",
        "std_free_energy": -13.924957275390625,
        "relative_population": 0.6802095539280876
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.86000001430511,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]