Melatonin

Melatonin is a hormone produced by the pineal gland in the brain, primarily known for regulating the body's sleep-wake cycle, or circadian rhythm. Its production increases in response to darkness, signaling to the body that it is time to sleep, and decreases with exposure to light, promoting wakefulness. Because of this function, it is often called the "hormone of darkness." Melatonin supplements are commonly used to help manage sleep issues like jet lag and delayed sleep-wake phase disorder. Beyond sleep, research suggests melatonin has antioxidant properties and plays other roles in the body that are still being explored. Explore searchable catalogue of hundreds of molecules, including details on how models were generated. Notes If you happen to break something, use superglue to fix it. It will make the broken part even stronger. I decided to go with the ball-and-stick type, as it is easiest to color, is rigid, and looks awesome. The model represents the major resonance contributor.