And fructose exists as a five membered sugar. So sucrose is a disaccharide that consists of an alpha glucose bound to a beta fructose. Now, unlike in this particular case, in this particular case where the bond is between carbon one and carbon four, the bond in sucrose is between the two anameric carbons on the two different sugar molecules. And this happens to be a bond between carbon one of glucose, the first sugar, and carbon two of the second sugar, the fructose. So this is alpha D glucose in its cyclic form. So we have carbon 12345 and six.