Applescript to rename task clipped using keyboard shortcut

Whenever I clip a Gmail window link using the Omnifocus 2:Send to Inbox keyboard shortcut, the task is created using the window title in this format:

email_subject - my_email_address - my_company_name Mail

I prepend an action verb using TextExpander, but all this remains
- my_email_address - my_company_name Mail

I need an Applescript that will go through my tasks and replaces that string with nothing (deletes it). Can you help me?