[
  {
    "molid": "mol9121",
    "smiles": "O=C1COC(=O)C1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1COC(=O)C1",
        "std_free_energy": -2.014666795730591,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C1[CH-]C(=O)OC1",
        "std_free_energy": -7.8288493156433105,
        "relative_population": 0.5807255944440246
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "O=C1[CH-]OC(=O)C1",
        "std_free_energy": -7.503096580505371,
        "relative_population": 0.41927440555597534
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.76,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      }
    ]
  }
]