Греческие буквы в названии файла

using System;
using System.IO;
using System.Text;
 
namespace FileInOut
{
    class Program
    {
        static void Main(string[] args)
        {
            Encoding encoding = Encoding.Unicode;
            string text_out = "We are what we repeatedly do.\nExcellence, then, is not an act, but a habit.\nΑριστοτελης";
            File.WriteAllText(@"Ελλαδα.txt", text_out, encoding);
 
            Console.OutputEncoding = encoding;
            string[] text_in = File.ReadAllLines(@"Ελλαδα.txt", encoding);
 
            foreach (string line in text_in)
                Console.WriteLine(line);
  
            System.Console.ReadKey();
        }
    }
}

Console.OutputEncoding = encoding;

using System;
using System.IO;
using System.Text;
 
namespace FileInOut
{
    class Program
    {
        static void Main(string[] args)
        {
            Encoding encoding = Encoding.Unicode;
            string text_out = "We are what we repeatedly do.\r\nExcellence, then, is not an act, but a habit.\r\nμπλθΩ";
            File.WriteAllText("∆∑ξ₤µΩ∞.txt", text_out, encoding);
 
            Encoding encoding_2 = Encoding.UTF8;
            Console.OutputEncoding = encoding_2;
            string[] text_in = File.ReadAllLines("∆∑ξ₤µΩ∞.txt", encoding);
 
            foreach (string line in text_in)
                Console.WriteLine(line);
 
            System.Console.ReadKey();
        }
    }
}

Encoding encoding = Encoding.UTF8;