File talk:Caffeine Molecule.png

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The description of this image would be improved if it identified the color coding involved. I presume that black spheres represent Carbon atoms and gray Hydrogen; I'm less clear on the meaning of the blue and red spheres which I presume are Nitrogen and Oxygen in some order. --SteveMcCluskey (talk) 13:49, 11 March 2008 (UTC)[reply]