[
  {
    "molid": "mol31342",
    "smiles": "CC(C)(O)OO",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(C)(O)OO",
        "std_free_energy": -7.720690727233887,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC(C)(O)O[O-]",
        "std_free_energy": 4.8351149559021,
        "relative_population": 0.9547699547835936
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 12.3,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]