Ключевые слова: alkaloid, atomic, atoms, background, blue background, caffeinated, caffeine, caffeine dependence, caffeine molecule, caffeine structure, chemical, chemical formula, chemistry, coffee, composition, compound, decaffeinating, dependence, design, drawing, drink, drug, energy, energy drinks, formula, guarana, hydrogen, illustration, intoxication, laboratory, line, medicine, methylxanthine alkaloid, molecular, molecule, nitrogen, oxygen, psychoactive, receptor, research, science, stimulant, structure, symbol, tea, technology, theine, wakefulness, xanthine,