How does a ring structure of a lactose looks like?

Lactose, a disaccharide sugar composed of glucose and galactose, has a ring structure that forms through a glycosidic bond. In its cyclic form, lactose exists primarily as a β-D-galactopyranosyl-(1→4)-D-glucopyranose. The glucose and galactose units each adopt a six-membered pyranose ring configuration, where the anomeric carbon of galactose is linked to the fourth carbon of glucose, creating the characteristic ring structure of lactose.