[
  {
    "molid": "mol9123",
    "smiles": "O=C(O)CC(=O)C(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)CC(=O)C(=O)O",
        "std_free_energy": 1.9974846839904785,
        "relative_population": 1.0
      },
      {
        "id": "-3_1",
        "charge": -3,
        "smiles": "O=C([O-])[CH-]C(=O)C(=O)[O-]",
        "std_free_energy": 0.9134248495101929,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C(O)CC(=O)C(=O)[O-]",
        "std_free_energy": -7.387176990509033,
        "relative_population": 0.2829957618357961
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "O=C([O-])CC(=O)C(=O)O",
        "std_free_energy": -8.316826820373535,
        "relative_population": 0.7170042381642039
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=C([O-])CC(=O)C(=O)[O-]",
        "std_free_energy": -14.614891052246094,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.22,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 2.56,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 2.55,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 2.54999995231628,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 2.55999994277954,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 2.22000002861023,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 3.89,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 4.2,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 4.36999988555908,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 3.54999995231628,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 4.3600001335144,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 3.89000010490417,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 13.0,
        "charge_state_pre": -2,
        "charge_state_post": -3,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]