 Ketamine, its origin story is really interesting. It was actually developed because its parent compound, which people know as PCP, phencyclidine, angel dust, right? People were using that in a clinical space as an anesthetic. However, it had this really pesky side effect of causing people to be psychotic and delirious far after the effects. So we wanted to- I would say that's pesky, yes. How is it that it transferred to being something that could be used in a therapeutic sense and administered by a physician?