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enter image description here

What is the formula on this cup representing?

Glorfindel
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1 Answers1

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It's a coffee mug, and coffee is (in)famous for one particular substance: Caffeine.

The 2D picture on Wikipedia is the same as on the mug, except that it's rotated 180 degrees. The 'sticks' are methyl ($\ce{CH3}$) groups.

enter image description here

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