These two products and these two products are known as glycosides. So this is the methyl beta D glucocide and this is the methyl alpha deglucouranicide. And notice the difference between these two molecules is simply the orientation, the stereo chemistry of this group attached to carbon number one, in the beta case, this points in the same direction as this group. And the alpha case, it points in the opposite direction of this group here. So these two products are animals. We have the alpha and the beta anomer and they're called glycosides.