So basically peptaglycan means we have a peptide component and we have a glycogen component. And so these purple molecules are sugar molecules and they basically line up to form a linear polysaccharide chain. And we have one chain, we have two chain, a third chain, a fourth chain and so forth. And some of these sugar components basically are attached to short peptides. So we have this 1234 amino acid tetrapeptide and we also have these 12345 so pentapeptides. And we see that these tetrapeptides are connected to the tetrapeptides of the adjacent linear polysaccharide chain by these pentapeptides.