For example,
the molecular formula of glucose (C6H12O6) fits into this general formula,
C6(H2O)6 But all the compounds which fit into this formula may not be
classified as carbohydrates For example acetic acid (CH3COOH) fits into
this general formula, C2(H2O)2 but is not a carbohydrate Similarly,
rhamnose, C6H12O5 is a carbohydrate but does not fit in this definition