using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var reg = @"\b(?:Create|Set|Delete)\((?>[^()]+|(?<c>)\(|(?<-c>)\))*(?(c)(?!))\)";
    	var text = "Create(Apple | Banana(Tree) | Mango (Tree) ) | Delete(Guava)|Set(Orange(Tree))";
    	var result = Regex.Matches(text, reg).Cast<Match>().Select(x => x.Value).ToList();
        foreach (var s in result)
        	Console.WriteLine(s);
	}
}