[
  {
    "molid": "mol31089",
    "smiles": "COC(O)OC",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "COC(O)OC",
        "std_free_energy": -6.671790599822998,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "COC([O-])OC",
        "std_free_energy": 4.286988258361816,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 11.79,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]