[
  {
    "molid": "mol9928",
    "smiles": "CCCCP(O)(=S)OCC",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCC[P@@](O)(=S)OCC",
        "std_free_energy": -2.9242630004882812,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.11,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]