[
  {
    "molid": "mol15989",
    "smiles": "O=C(/C=N/O)CCl",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(/C=N/O)CCl",
        "std_free_energy": -5.718523025512695,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C(/C=N/[O-])CCl",
        "std_free_energy": -2.6155831813812256,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.9,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      }
    ]
  }
]