Remove the escape sequence '\' from string to convert it to XmlDocument

I have a web service which returns a struct object, so I get the response as the following XML string. Now I need to load it into XmlDocument object but how do I get rid of the escape sequences in the string. The '\' with every '"' is causing error.

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<Quote xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://tempuri.org/\">
<price>19656</price>
</Quote>