This repo contains an extension for Magento 2 which adds a custom tab called "Structured Description" under Advance Settings tab group in admin product edtion.
Also, the extension shows in product page (front end) the list of structured descriptions saved by the previous tab.
Just type the following terminal command under your Magento 2 root directory:
composer require snowdog/module-product-custom-description
Please read the following article for more information about this extension: https://snow.dog/blog/tutorial-how-to-implement-an-admin-product-tab-in-magento-2/