1. Institute of Chemistry, Karl Franzens University, Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal Science Campus, Karachi, Sindh, Pakistan, and Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravska cesta 9, 845 38 Bratislava, Slovak Republic