Matching Addresses in Sieve

I have an email with the following header line:

From: 'Thank you!Kohls' <Kohls-MNc@FeedbackKohlsOpinionRequestedlxecrftHO.com>

I am trying to match that with: if address :contains "from" "Thank you!Kohls" { addflag "\\Seen"; fileinto "Junk"; stop; }

However, the matching portion of the from address is only the section between < and >. Since there are changing sections that are different for each email, I can't use that. I wanted to match the stuff before <. I have tried numerous formats for the if statement but none of them have worked. What is the proper way to make that match work? Thanks,

-- Doug