Pretty interesting organic molecule, I thought. It looks kind of familiar. I resized and sharpened the atomic drawing to make it easier to see:
Some of the N and H characters are hard to distinguish if you don’t know any organic chemistry, but if you do it’s clear which is which.
The molecule on Amazon isn’t shown complete, so there’s plausible deniability, but it sure looks like Amazon thinks caffeine is a “school essential” for K-12 students. I wonder if it works as well as ritalin.