[
  {
    "molid": "euroSAMPL-02",
    "smiles": "O=C(O)Cn1cc(-c2ccccc2)ccc1=O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)Cn1cc(-c2ccccc2)ccc1=O",
        "std_free_energy": -2.9554672241210938,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])Cn1cc(-c2ccccc2)ccc1=O",
        "std_free_energy": -10.82949161529541,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.91,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "euroSAMPL1"
      }
    ]
  }
]