Caffeine Molecule

Caffeine is the stimulant in coffee and tea!
"Caffeine is a bitter, white crystalline xanthine alkaloid and a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants, as well as enhancing the reward memory of pollinators."
--http://en.wikipedia.org/wiki/Caffeine
Model created using VMD:
http://www.ks.uiuc.edu/Research/vmd/