[
  {
    "molid": "mol35202",
    "smiles": "CCCCCCCCCCCCCCCC(=O)OP(=O)(O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCCCCCCCCCCCCCC(=O)OP(=O)(O)O",
        "std_free_energy": -0.9342561364173889,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCCCCCCCCCCCCCCC(=O)OP(=O)([O-])O",
        "std_free_energy": -11.953567504882812,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.36999988555908,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]