[
  {
    "molid": "mol10246",
    "smiles": "CC1(CCCCC(=O)O)N=N1",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "CC1(CCCCC(=O)O)N=N1",
        "std_free_energy": -4.372763156890869,
        "relative_population": 0.9595717330109639
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC1(CCCCC(=O)[O-])N=N1",
        "std_free_energy": -7.935839653015137,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.7,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]