[
  {
    "molid": "mol36748",
    "smiles": "O=P(O)(O)C(O)C(O)P(=O)(O)O",
    "microspecies": [
      {
        "id": "-4_15",
        "charge": -4,
        "smiles": "O=P([O-])([O-])[C@H](O)[C@H](O)P(=O)([O-])[O-]",
        "std_free_energy": -13.855125427246094,
        "relative_population": 0.9999984180709947
      },
      {
        "id": "-3_13",
        "charge": -3,
        "smiles": "O=P([O-])([O-])[C@H](O)[C@H](O)P(=O)([O-])O",
        "std_free_energy": -13.938800811767578,
        "relative_population": 0.9999983026544107
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 8.85999965667725,
        "charge_state_pre": -3,
        "charge_state_post": -4,
        "data_source": "QSARToolbox"
      }
    ]
  }
]