[
  {
    "molid": "mol1941",
    "smiles": "OCC(F)F",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "OCC(F)F",
        "std_free_energy": -7.48962926864624,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]CC(F)F",
        "std_free_energy": 8.150457382202148,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 13.11,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]