In fact, we see that we have carbon and we have water. And another name for water is hydrate. And so we have carbohydrates, these molecules that contain carbon as well as water molecules. So the empirical formula is ch 20 multiplied by N, where N is basically any positive integer, any positive N value that is equal to three or greater. So the simplest monosaccharide contains an nvalue that is equal to three. And that means the simple monosaccharide consists of three carbon atoms, six H atoms and three oxygen atoms.