[
  {
    "molid": "mol37500",
    "smiles": "Oc1c2cccc1OCCOCCOCCOCCOCCO2",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Oc1c2cccc1OCCOCCOCCOCCOCCO2",
        "std_free_energy": -6.7052388191223145,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]c1c2cccc1OCCOCCOCCOCCOCCO2",
        "std_free_energy": 0.7144758701324463,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 10.8999996185303,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]