[
  {
    "molid": "mol38499",
    "smiles": "CCC(N)(CCC(=O)O)C(=O)O",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "CC[C@@]([NH3+])(CCC(=O)O)C(=O)[O-]",
        "std_free_energy": -9.159649848937988,
        "relative_population": 0.9850479310031272
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC[C@@]([NH3+])(CCC(=O)[O-])C(=O)[O-]",
        "std_free_energy": -14.081528663635254,
        "relative_population": 0.9994407995470912
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.84999990463257,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]