There is no HFCS "molecule"- high fructose corn syrup is a solution containing a certain percentage of fructose and glucose molecules, which are not attached to each other.
You may be confusing it with sucrose (table sugar) which does consist of a fructose and glucose molecule with a glycosidic linkage.
You may be confusing it with sucrose (table sugar) which does consist of a fructose and glucose molecule with a glycosidic linkage.
http://en.wikipedia.org/wiki/High-fructose_corn_syrup