Parse error: syntax error, unexpected end of file in comments.php

i keep getting parse error , the site is local for training no link yet

<?php /*this to make sure no one can access comments page directly */
	if(!empty($_SERVER['SCRIPT_FILENAME']) && 'comments.php' == basename($_SERVER['SCRIPT_FILENAME'])){
	die('Please don not try to access this page directly, thanks!');
	} 

?>

	<?php if(post_password_required()) { ?>
	<p>This post is Password protected!</p>
	<?php return; } ?>

	<?php
	//Display the comment loop
	if(have_posts()): 	?>
		<h2> <?php comments_number('Be the first to comment!', 'One Comment' , '% Comments');?></h2>
		<ol id='comments_section'>
			<?php wp_list_comments(array('avatar_size'=>80, 'reply_text'=>'Reply to this comment.'));?>
		</ol>

		<div><?php paginate_comments_links();?></div>
	<?php else: //if no comments so far	?>

		<?php if('open' == $post->comment_status): ?>
			<p>Have your say</p>
		<?php else:?>
			<P>Comments currently closed!</p>
		<?php endif; ?>
	<?php endif; ?>
<?php if('open' == $post->comment_status): ?>
	<?php //must wrap the comment form in div with id respond ?>
	<div id='respond'>
		<h2> <?php comment_form_title();?></h2>
	<div id='cancel-comment-reply'>
		<small><?php cancel_comment_reply_link();?></small>
	</div>
	<?php if(get_option('comment_registration') && !$user_ID): ?>
		<p>You must be logged in to comment</p>
	<?php else: //forth if?>

		<form action="<?php echo get_option('site_url');?>/wp-comments-post.php" method="post" id="commentform">
		<?php if($user_ID): ?>
			<p>Logged in as <a href="<?php echo get_option('siteurl');?>/wp-admin/profile.php"><?php echo $user_identity;?></a></p>
		<?php else: ?>
			<p><input type='text' name='author' id='author' value="<?php echo $comment_author;?>"/>
				<label for='author'>Name</label></p>
			<p><input type='text' name='email' id='email' value="<?php echo $comment_author_email;?>"/>
				<label for='email'>Mail <?php if($req) echo '(Required field)';?></label></p>
			<p><input type='text' name='url' id='url' value="<?php echo $comment_author_url;?>"/>
			<label for='url'>Website </label></p>
		<?php endif; ?>		

		<div>
		<?php comment_id_fields();?>
			<input type="hidden" name="redirect_to" value="<?php echo htmlspecialchars($_SERVER['REQUEST_URI'])?>"/>
		</div>
		<p><textarea id='comment' name='comment' cols='50' row='10'></textarea></p>
		<?php if( get_option('comment_moderation') == '1'):  { ?> <p>Comment moderation is enabled , no need to resubmit any comments posted</p>
		<?php } ?>
		<p> <input type='text' name='submit' id='submit' value='Submit' /></p>
		<?php do_action('comment_form', $post->ID);?>
		</form>
		<?php endif;?>
	</div>
<?php endif;?>