<prompt> Composition of Hyaluronic acidN-acetyl glucosamine b glucosamine acidN-acetyl glucosamine b-glucoraunic acidN-acetyl glucosamine sulfated glucosamine acidN-acetyl glucosamine iduranic acid  <response>: Composition of hyaluronic acid: repeating units of N-Acetyl-glucosamine and beta-1,4-Glucuronic acid.Ref: DM Vasudevan, 7th edition, page no: 80 