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        "id": "-1_3",
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        "id": "-1_5",
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    ],
    "macro_pka_values": [
      {
        "pka_value": 3.18,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 7.52,
        "charge_state_pre": -2,
        "charge_state_post": -3,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 11.79,
        "charge_state_pre": -5,
        "charge_state_post": -6,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 11.24,
        "charge_state_pre": -4,
        "charge_state_post": -5,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 9.26,
        "charge_state_pre": -3,
        "charge_state_post": -4,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 2.2,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]