Adrenaline, also known as adrenalin or epinephrine, is a hormone, neurotransmitter, and medication. Adrenaline is normally produced by both the adrenal glands and certain neurons. It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation, and blood sugar. From Wikipedia.
Color scheme: Carbon in green, Nitrogen in blue, Oxygen in red, Hydrogen in while.