Ayuda con este codigo para mostrar publicidad

<section id="latest-posts" class="clearfix<?php echo $fc_section_class ?><?php echo $fc_section_no_gap ?>">
                                <h4 class="featured-section-title"><?php _e( "Latest Articles", "mythemeshop" ); ?></h4>
                                [B]<? $contador=0; ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<?$contador++; ?>
<? if ( ($contador==4)  and is_home() ) { ?>
BANNER ADSENSE
<?}?>[/B]
                                <?php best_the_homepage_article( $featured_category_layout, $j, true );?>
                                <?php $j++; endwhile; endif; ?>
                                <!--Start Pagination-->
                                <?php if (isset($mts_options['mts_pagenavigation_type']) && $mts_options['mts_pagenavigation_type'] == '1' ) { ?>
                                    <?php $additional_loop = 0; mts_pagination($additional_loop['max_num_pages']); ?>
                                <?php } else { ?>
                                    <div class="pagination pagination-previous-next">
                                        <ul>
                                            <li class="nav-previous"><?php next_posts_link( '<i class="fa fa-chevron-left"></i> '. __( 'Previous', 'mythemeshop' ) ); ?></li>
                                            <li class="nav-next"><?php previous_posts_link( __( 'Next', 'mythemeshop' ).' <i class="fa fa-chevron-right"></i>' ); ?></li>
                                        </ul>
                                    </div>
                                <?php } ?>
                                <!--End Pagination-->
                            </section><!--#latest-posts-->

<?php best_the_homepage_article( $featured_category_layout, $j, true );?>

<section id="latest-posts" class="clearfix<?php echo $fc_section_class ?><?php echo $fc_section_no_gap ?>">
                                <h4 class="featured-section-title"><?php _e( "Latest Articles", "mythemeshop" ); ?></h4>
                                <? $contador=0; ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

                                <?php best_the_homepage_article( $featured_category_layout, $j, true );?>
                                <?php $j++;?> 
                                 <?$contador++; ?>
                                 <? if ( ($contador==4)  and is_home() ) { ?>
                                 BANNER ADSENSE
                                 <?}?>
                                <?php endwhile; endif; ?>
                                <!--Start Pagination-->
                                <?php if (isset($mts_options['mts_pagenavigation_type']) && $mts_options['mts_pagenavigation_type'] == '1' ) { ?>
                                    <?php $additional_loop = 0; mts_pagination($additional_loop['max_num_pages']); ?>
                                <?php } else { ?>
                                    <div class="pagination pagination-previous-next">
                                        <ul>
                                            <li class="nav-previous"><?php next_posts_link( '<i class="fa fa-chevron-left"></i> '. __( 'Previous', 'mythemeshop' ) ); ?></li>
                                            <li class="nav-next"><?php previous_posts_link( __( 'Next', 'mythemeshop' ).' <i class="fa fa-chevron-right"></i>' ); ?></li>
                                        </ul>
                                    </div>
                                <?php } ?>
                                <!--End Pagination-->
                            </section><!--#latest-posts-->