Customize buy now button with merchant name

I am aware that content egg allows users to customize the text in the external link button by using values like %MERCH% and %DOMAIN% in the general settings.

However, I’d like to ask if there’s a Shortcode or a PHP function that would allow the merchant name of the woo synchronization product to be displayed before the default ‘buy product’ button. I couldn’t find any shortcodes so I tried writing a function

use ContentEgg\application\helpers\TemplateHelper;

add_action( 'woocommerce_before_add_to_cart_form', 'add_merchant_before_add_to_cart_form' );
 
function add_merchant_before_add_to_cart_form(){
	$merchantInfo = '<img src="<?php echo esc_attr(TemplateHelper::getMerhantIconUrl($item, true)); ?>" /> <small class="title-case"><?php TemplateHelper::getMerhantName($item, true); ?></small>';
    
    return $merchantInfo;
}

It’s incorrect but it explains what I am trying to do. I’d appreciate it if someone could help. Thanks.