ValueDropdownAttribute for Dictionary's key?

Hi, I am trying to implement an object struct like json[see the code below], members are stored in a dictionary. The dictionary's key is a string, it is inconvenient to type a string and easy to make a mistake, hope the ValueDropdownAttribute can work for it. The enum type can show a dropdown, but the enum keys are hard coded.

using System.Collections;
using System.Collections.Generic;
using Sirenix.OdinInspector;
using UnityEngine;

public enum MemberKey
{
  Health,
  Power,
  Energy
}

[CreateAssetMenu]
public class MemberKeyTable : ScriptableObject
{
  public List<string> keys = new List<string>();
}

[CreateAssetMenu]
public class DomObject : SerializedScriptableObject
{
  [AssetsOnly]
  public DomObject Parent;

  public Dictionary<MemberKey, DomObject> Members = new Dictionary<MemberKey, DomObject>();

  [AssetsOnly]
  public MemberKeyTable MemberKeys;

  //Need a DictionaryKeyDropdown attribute from MemberKeys 
  public Dictionary<string, DomObject> Members1 = new Dictionary<string, DomObject>();
}

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