1. National Hellenic Research Foundation, Institute of Organic and Pharmaceutical Chemistry, Vas, Constantinou 48, 11635, Athens, Greece, Department of Biology Chemistry and Pharmacy, Free University of Berlin, Takustrasse, 3, 14195 Berlin, Germany, Laboratory of Biomolecular Structure, National Institute of Chemistry, Hajdrihova 19, POB 30 SI-1115 Ljubljana, Slovenia, Varian Ltd., 10 Mead Road, Oxford Industrial Park, Yarnton, Oxford OX5 1QU, United Kingdom, Chemistry Department, National & Kapodistrian...