Sodium magnesium Chlorophyll
Chlorophyll is a network of carbon, hydrogen, nitrogenand oxygen atoms surrounding a single magnesium atom. (The blood pigment hemoglobin has an iron atom in place of the magnesium.)
Chlorophyll may be an antioxidant. It is capable of electron transfer, and has been studied for use in biological solar electricity production.
Sodium copper chlorophyllin is produced by replacing the magnesium atom with copper and sodium.