Having Trouble Saving JSON Schema for My Shopify Product

I'm trying to enhance my Shopify website by adding a product schema but I'm running into issues. I've written out the JSON but it just won't save, even though it validates correctly through a JSON validator. Here's the code I'm trying to implement:

{
"@context": "https://schema.org/",
"@type": "Product",
"name": "{{ product.title }}",
"description": "{{ product.description | strip_html | escape }}",
"image": "{{ product.featured_image | img_url: 'original' | prepend: 'https:' }}",
"url": "{{ shop.url }}{{ product.url }}",
"sku": "{{ product.sku }}",
"offers": {
"@type": "Offer",
"priceCurrency": "USD",
"price": "{{ product.price | money_without_currency }}",
"availability": "{% if product.available %}https://schema.org/InStock{% else %}https://schema.org/OutOfStock{% endif %}",
"itemCondition": "https://schema.org/NewCondition"
},
"brand": {
"@type": "Brand",
"name": "Chloé Duncan"
}
}

I really don't know what I'm missing and it's getting frustrating trying to save it within Shopify only for it to reject with a "JSON error." Any advice would be appreciated!