[
  {
    "molid": "mol13304",
    "smiles": "NC(=O)C(CC(=O)O)c1ccccc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "NC(=O)[C@H](CC(=O)O)c1ccccc1",
        "std_free_energy": -4.1360273361206055,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "NC(=O)[C@H](CC(=O)[O-])c1ccccc1",
        "std_free_energy": -9.490025520324707,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.23,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      },
      {
        "pka_value": 4.42000007629395,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 4.03999996185303,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]