using System;
using System.Linq;
using System.Text.RegularExpressions;
public class Test
{
	public static void Main()
	{
		var matches = Regex.Matches("Test {Token1} {Token 2}", @"{([^{}]*)");
		var results = matches.Cast<Match>().Select(m => m.Groups[1].Value).Distinct().ToList();
		Console.WriteLine(String.Join(", ", results));
		matches = Regex.Matches("Test {Token1} {Token {2}}", @"{((?>[^{}]+|{(?<c>)|}(?<-c>))*(?(c)(?!)))");
		results = matches.Cast<Match>().Select(m => m.Groups[1].Value).Distinct().ToList();
		Console.WriteLine(String.Join(", ", results));
	}
}

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