[
  {
    "molid": "mol9237",
    "smiles": "C[S+](C)CC(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "C[S+](C)CC(=O)[O-]",
        "std_free_energy": -10.686333656311035,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "C[S+](C)CC(=O)O",
        "std_free_energy": -0.6147956848144531,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.5,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]