parsing Error, Sorry I'm A Noob

Sorry About This I’m New, I keep Getting A parsing Error And I Don’t Know Why… Can Anybody Help Me?

/// 
    /// Main menu.
    /// Attached To Main Camera
    /// </summary>
    using UnityEngine;
    using System.Collections;
    
    public class MainMenu : MonoBehaviour {
    
    	public Texture BackGroundTexture;
    
    
    	void OnGUI(){
    
    		// Display Our backGround Texture
    		GUI.DrawTexture (new Rect (0, 0, Screen.width, Screen.height), BackGroundTexture);
    
    		//Displays Our Button
    
    		if (GUI.Button (new Rect( Screen.width * .5f, Screen.height * .5f, Screen.width * .5f, Screen.height * .1f), "Play Game")){
    
    		}

At the very least you need two more } at the end