title: C# parse string to get desired format
body: <p>Trying to parse this:</p>
  
  <pre><code>Copy11-1-11111-3476cf30e7-18e8-48d8-841e-f215db307cdeOctTue1533152015-res.xml
  </code></pre>
  
  <p>and get </p>
  
  <pre><code>11-1-11111-3476cf30e7-18e8-48d8-841e-f215db307cdeOctTue1533152015.xml
  </code></pre>
  
  <p>How do I remove the "copy" in the beginning and "-res" at the end?</p>