[
  {
    "molid": "mol33012",
    "smiles": "CC(C)C(=O)NCC(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(C)C(=O)NCC(=O)O",
        "std_free_energy": -3.460322380065918,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC(C)C(=O)NCC(=O)[O-]",
        "std_free_energy": -10.121646881103516,
        "relative_population": 0.9999857579297232
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.718,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]