structural chemical molecular formula and model of caffeine. atoms are represented as spheres with color coding

activity addiction adenosine alkaloid and are ato atom atomic atoms biochemistry biology bond c8h10n4o2 caffeine carbon chain chemical chemistry cocoa coding coffee coffein cola color compound dependence drink drug education effect element energy formula guarana health hydrogen infographic laboratory medicine model molecular molecule nitrogen oxygen paraxanthine pharmacology represented school science sphere spheres stimulate structura structural structure tea theobromine theophylline