[
  {
    "molid": "mol12981",
    "smiles": "Cc1cc(O)n(C)c(=O)n1",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "Cc1cc(O)n(C)c(=O)n1",
        "std_free_energy": -6.139651298522949,
        "relative_population": 0.9962211902221823
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "Cc1cc([O-])n(C)c(=O)n1",
        "std_free_energy": -1.4975216388702393,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 10.13,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      }
    ]
  }
]