using System;

using System.Linq;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        MyTool tool = new MyTool()

        {PrintingSystem = new PrintingSystem()

        {Document = new Document()

        {Target = 1}}};

        Console.WriteLine(tool.PrintingSystem.Document.Target);

    }

​

    public class MyTool

    {

        //I don't know the Type so I named it equal

        public PrintingSystem PrintingSystem

        {

            get;

            set;

        }

    }

​

    public class PrintingSystem

    {

        public Document Document

        {

            get;

            set;

        }

    }

​

    public class Document

    {

        public int Target

        {

            get;

            set;

        }

    }

}