C# help

Question

Error:
Error CS0201 Only assignment, call, increment, decrement, and new object expressions can be used as a statement

The file in which this is happening: using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EndTrigger : MonoBehaviour {

public GameManager gameManager;

void OnTriggerEnter ()
{
gameManager.LevelComplete;
}
}

And GameManager (The file I am referencing): using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class GameManager : MonoBehaviour {

bool gameHasEnded = false;

public float restartDelay = 1f;

public void EndGame ()
{
if (gameHasEnded == false)
{
gameHasEnded = true;
Debug.Log("Game Over");
Invoke("restart", restartDelay);
}
}

void restart ()
{
SceneManager.LoadScene("Level 1");
}

public void LevelComplete ()
{
Debug.Log("Level Finished");
}

}