Convert Amazon XML to JSON in Rails and parse with OpenStruct

How'd I go about converting Amazon's XML to JSON with Ruby on Rails and then parse it with OpenStruct?

raw_products = request.item_search(query: params)
hashed_products = raw_products.to_h

@products = []

hashed_products['ItemSearchResponse']['Items']['Item'].each do |item|
  product = OpenStruct.new
  product.name = item['ItemAttributes']['Title']
  product.url = item['DetailPageURL']
  product.image_url = item['LargeImage']['URL']

  @products << product 
end

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Having little luck with this (undefined method 'to_sym' for #<Hash:0x000000028601f8>):

converted_products = JSON.parse(raw_products.to_json)

converted_products.map do |product|
  product = OpenStruct.new(product)
  product.name = item['ItemAttributes']['Title']
  product.url = item['DetailPageURL']
  image = product.images.find { |i| i["largeImage"] == 'URL' }
  product.image = OpenStruct.new(image)
  product
end

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Example XML:

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