english: What's a drug? A drug is made up of a small molecule of hydrogen, carbon, oxygen, nitrogen, and a few other atoms all cobbled together in a shape, and it's those shapes that determine whether, in fact, that particular drug is going to hit its target.
non_english: Šta je lek? Lek je sačinjen od malog molekula  vodonika, ugljenika, kiseonika, azota  i još nekoliko drugih atoma, i sve to je isprepleteno u oblik i u stvari ti oblici određuju da li će određeni lek pogoditi svoj cilj.