[
  {
    "molid": "mol10259",
    "smiles": "CCCN(CC(=O)O)CC(=O)O",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "CCC[NH+](CC(=O)[O-])CC(=O)O",
        "std_free_energy": -5.952438831329346,
        "relative_population": 0.9889571078734533
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCC[NH+](CC(=O)[O-])CC(=O)[O-]",
        "std_free_energy": -14.367837905883789,
        "relative_population": 0.9957709514421407
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "CCCN(CC(=O)[O-])CC(=O)[O-]",
        "std_free_energy": -6.156613349914551,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.44,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 2.49000000953674,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 10.09,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]