[
  {
    "molid": "mol35845",
    "smiles": "CCOC(=O)C(C(=O)O)=C(C)C",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCOC(=O)C(C(=O)O)=C(C)C",
        "std_free_energy": -3.7059621810913086,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCOC(=O)C(C(=O)[O-])=C(C)C",
        "std_free_energy": -9.120912551879883,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.35999989509583,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]