using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var str = "8/4/2022 9:47:59 AM,Gerald Digat Denys,8/4/2022 9:47:59 AM,Updated,207190091504228,CD_CODE_GD,CD_CODE_GD,CD_DESC_GDxxy,";

        Console.WriteLine(Regex.Replace(str, @"[^,a-z, A-Z,]+", String.Empty).Replace(",", "").Trim().ToString());

    }

}