[
  {
    "molid": "mol32491",
    "smiles": "NC(=O)C(O)C(N)C(=O)O",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "NC(=O)[C@@H](O)[C@H]([NH3+])C(=O)[O-]",
        "std_free_energy": -11.97900104522705,
        "relative_population": 0.999965170423662
      },
      {
        "id": "1_4",
        "charge": 1,
        "smiles": "NC(=O)[C@@H](O)[C@H]([NH3+])C(=O)O",
        "std_free_energy": -1.6072801351547241,
        "relative_population": 0.9758215211452681
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.1199999,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "OCHEM"
      }
    ]
  }
]