ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Caffeine. Computer model of a molecule of the alkaloid, stimulant and legal drug caffeine. Caffeine is most often consumed in drinks like tea and coffee. The molecule's chemical formula is C8.H10.N4.O2. Atoms (spheres) are colour-coded: carbon (grey), hydrogen (light grey), nitrogen (blue), oxygen (red).
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