What will be the output of the C#.NET code snippet given below?

namespace AptitudeCrackConsoleApplication
{ 
    class Baseclass
    { 
        public void fun()
        { 
            Console.Write('Base class' + ' ');
        } 
    } 
    class Derived1: Baseclass
    { 
        new void fun()
        {
            Console.Write('Derived1 class' + ' '); 
        } 
    } 
    class Derived2: Derived1
    { 
        new void fun()
        { 
            Console.Write('Derived2 class' + ' ');
        }
    }
    class Program
    { 
        public static void Main(string[ ] args)
        { 
            Derived2 d = new Derived2(); 
            d.fun(); 
        } 
    } 
}