melatonin hormone, molecular model.

melatonin hormone molecular model melatonine chemistry tryptophan tanacetum parthenium antiaging seasonal clock neurohormone atom nseasonal pineal gland dietary supplement chemical daily cycle molecule aging biochemistry hypericum perforatum jet lag compound insomnia structure serotonin circadian rythm feverfew antioxidant rhythm plays role regulating biological three representations 2d skeletal formula 3d ballstick spacefilling atoms are represented as spheres conventional color coding hydrogen white carbon grey oxygen red nitrogen blue