wordpress if statement if logged in then show different button

i have homepage with 2 buttons that show up How it works Sign up

here is the php code i have and i beleive html code

<?php

            $PricerrTheme_enable_how_it_works = get_option('PricerrTheme_enable_how_it_works');
            if($PricerrTheme_enable_how_it_works != "no"):

            $hthing = get_bloginfo('url'). '/wp-login.php?action=register';

            if(is_user_logged_in())
            $hthing = PricerrTheme_post_new_link();

            $Pricerr_main_how_it_works_link = get_option('Pricerr_main_how_it_works_link');
            if(!empty($Pricerr_main_how_it_works_link))
            {
                $hthing = $Pricerr_main_how_it_works_link;
            }


        ?>
        <div class="main_graphic">
            <div class="main_graphic_ier">

                 <div class="test_line_1"><?php echo stripslashes(get_option('Pricerr_main_how_it_works_line1')) ?></div>
                 <div class="test_line_2"><?php echo stripslashes(get_option('Pricerr_main_how_it_works_line2')) ?></div>
                 <div class="test_line_3">

                 <ul class="duo_buttons">
                   <li class="lft"><a href="<?php echo get_option('PricerrTheme_button_1_link') ?>"><?php echo get_option('PricerrTheme_button_1_caption') ?></a></li>
                   <li class="rght"><a href="<?php echo get_option('PricerrTheme_button_2_link') ?>"><?php echo get_option('PricerrTheme_button_2_caption') ?></a></li>
                 </ul>


                 </div>


            </div>
        </div>
        <?php endif; endif; ?>

were the code shows

 <ul class="duo_buttons">
                   <li class="lft"><a href="<?php echo get_option('PricerrTheme_button_1_link') ?>"><?php echo get_option('PricerrTheme_button_1_caption') ?></a></li>
                   <li class="rght"><a href="<?php echo get_option('PricerrTheme_button_2_link') ?>"><?php echo get_option('PricerrTheme_button_2_caption') ?></a></li>
                 </ul>

am trying to use if statement like this but it dont work it shows my if statement on page instead.

if ( is_user_logged_in() ) {
} else {
<ul class="duo_buttons">
                   <li class="lft"><a href="<?php echo get_option('PricerrTheme_button_1_link') ?>"><?php echo get_option('PricerrTheme_button_1_caption') ?></a></li>
                   <li class="rght"><a href="<?php echo get_option('PricerrTheme_button_2_link') ?>"><?php echo get_option('PricerrTheme_button_2_caption') ?></a></li>
                 </ul>
}

and here is the full code edited

<?php

            $PricerrTheme_enable_how_it_works = get_option('PricerrTheme_enable_how_it_works');
            if($PricerrTheme_enable_how_it_works != "no"):

            $hthing = get_bloginfo('url'). '/wp-login.php?action=register';

            if(is_user_logged_in())
            $hthing = PricerrTheme_post_new_link();

            $Pricerr_main_how_it_works_link = get_option('Pricerr_main_how_it_works_link');
            if(!empty($Pricerr_main_how_it_works_link))
            {
                $hthing = $Pricerr_main_how_it_works_link;
            }


        ?>
        <div class="main_graphic">
            <div class="main_graphic_ier">

                 <div class="test_line_1"><?php echo stripslashes(get_option('Pricerr_main_how_it_works_line1')) ?></div>
                 <div class="test_line_2"><?php echo stripslashes(get_option('Pricerr_main_how_it_works_line2')) ?></div>
                 <div class="test_line_3">
if ( is_user_logged_in() ) {
} else {
                 <ul class="duo_buttons">
                   <li class="lft"><a href="<?php echo get_option('PricerrTheme_button_1_link') ?>"><?php echo get_option('PricerrTheme_button_1_caption') ?></a></li>
                   <li class="rght"><a href="<?php echo get_option('PricerrTheme_button_2_link') ?>"><?php echo get_option('PricerrTheme_button_2_caption') ?></a></li>
                 </ul>


                 </div>


            </div>
}
        </div>