1. Department of Life Science Informatics; B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry; Rheinische Friedrich-Wilhelms-Universität; Dahlmannstr. 2 D-53113 Bonn Germany
2. Department of Pharmacy and Biochemistry, Pharmaceutical/Medicinal Chemistry; Eberhard-Karls-Universität Tübingen; Auf der Morgenstelle 8 D-72076 Tübingen Germany