[
  {
    "molid": "mol18215",
    "smiles": "CCCCC1(C2CCCC2)Cc2cc(OCC(=O)O)c(Cl)c(Cl)c2C1=O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCC[C@]1(C2CCCC2)Cc2cc(OCC(=O)O)c(Cl)c(Cl)c2C1=O",
        "std_free_energy": -2.6095714569091797,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCCC[C@]1(C2CCCC2)Cc2cc(OCC(=O)[O-])c(Cl)c(Cl)c2C1=O",
        "std_free_energy": -10.33303451538086,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.9,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Baltruschat ChEMBL"
      }
    ]
  }
]