alpha-3-deoxy-D-manno-oct-2-ulosonic acid-(2-8)-alpha-3-deoxy-D-manno-oct-2-ulosonic acid-(2-O)allyl
alpha-3-deoxy-d-manno-oct-2-ulosonic acid-(2-8)-alpha-3-deoxy-d-manno-oct-2-ulosonic acid-(2-o)allyl