Euthyrox somewhat answered.
I did a google search on the word "Euthyrox" since that's the word found in the magic eye poster at the beginning of Ep. I part I and found out that "Euthyrox" is a medication. I did a google image search on "Euthyrox" and found the exact magic eye picture used in the cartoon. http://www.thyrolink.com/about/mageye2.html That is indeed a "W" behind the word "Euthyrox", not a butterfly like I thought at first :)