theobromine, dimethylxanthine, purine alkaloid molecule. it is xanthine alkaloid in the cacao bean. paper packaging for drugs

adenosine alkaloid aphrodisiac atom atomic bean bronchodilator c7h8n4o2 cacao carbon chemical chemistry chocolate diuretic drawing drug flat formula guarana hydrogen icon illustration kola metabolite molecular molecule mouse nitrogen nucleotide organic oxygen packaging paper phosphodiesterase purine stimulator structural structure theobroma theobromine theophylline vasodilator vector xantheose xanthine yerba