Ключевые слова: alkaloid, atomic, atoms, 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, futuristic background, 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,