Benzene is a very toxic organic (carbon-based) chemical.
Structure here: http://en.Wikipedia.Org/wiki/benzene Epinephrine
is another name for adrenaline
which acts as a hormone
and a neurotransmitter
in humans and other mammals. Structure here: http://en.Wikipedia.Org/wiki/epinephrine Epinephrine includes a "benzene" ring, but the attached groups give it its unique behavior.