N-Pyrrolidino Metonitazene, also called metonitazepyne, is actually a artificial opioid. It's been called a beige powder and is documented for being administered by injection. You can find proof that its use leads to considerable damage, like Dying. It's got no recognised therapeutic use. WHO, by its COVID-19 Solidarity Therapeutics Demo, https://maps.app.goo.gl/SucmaxKzrENyUBfj9