[
  {
    "molid": "mol448",
    "smiles": "CCOCCS",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCOCCS",
        "std_free_energy": -6.291058540344238,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCOCC[S-]",
        "std_free_energy": 0.6586273908615112,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 9.38,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 9.35,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 9.38000011444092,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]