Mood enhancement trivia...

[helen99]

I just received the Thinkgeek catalog, which has a line of teeshirts with caffeine molecules printed on them (I have one). Recently they've added a chocolate molecule to their line of shirts. The two molecules looked so much alike that at first I thought they were identical. There is a difference, though. The first image is caffeine, and the second one is chocolate.

Comments

[brigidsblest.livejournal.com]

Not atom. Unit?

[helen99.livejournal.com]

I think the unit they're talking about is the CH3 methyl group, composed of 4 atoms.