C₈H₁₀O₂N₄H₂O

Oh joyous formulae of the Gods! Mmmm. Caffine. In all its forms it is undisputedly the most glorious of all creations! Of course this may be met with some opposition but those who disagree are badger-busting gits who aren't worth a Tinker's cuss anyway so they don't count.

A must see link. Not sure where the top half got to... must do something about that. Go to it, man!