Add reference to product image path

[Tiendas Multisports]

Greetings to all, I work with PS 1.7.6.5

I am looking for a way to add to the product images path or at least to the main one that Google indexes, the product reference after the name.

• Storeurl / sizeimagen / ulr-del-product.jpg -> this is how it normally appears
• Storeurl / sizeimage / ulr-of-product-reference.jpg -> this is how I need to display the URL

They could help me to make these changes, which files can I touch, where or how I can do it.

Thank you very much.