Disable creating nested JSON objects from CSV when headers have dots

[typeofweb]

I have a CSV file from Shopify that exports custom fields in the following manner:

og (product.metafields.custom.og),Google: Custom Product (product.metafields.mm-google-shopping.custom_product)

Unfortunately those are converted into nested objects which is completely unexpected:

{
  "og (product": {
    "metafields": {
      "custom": {
        "og)": ""
      }
    }
  }
}

Is there a way to keep those headers as they are instead of nesting?