1. Small Molecule Crystallography Center ETH Zürich Vladimir-Prelog-Weg 1/3 CH-8093 Zürich Switzerland
2. Roche Innovation Center Basel F. Hoffmann-La Roche AG Grenzacherstrasse 124 CH-4070 Basel Switzerland
3. Gerber Molecular Design Forten 649 CH-8873 Amden SG Switzerland
4. Senn Chemicals AG Ruchwiesenstrasse CH-8157 Dielsdorf Switzerland
5. Laboratory of Organic Chemistry ETH Zürich Department of Chemistry and Applied Biosciences Laboratorium für Organische Chemie Vladimir-Prelog-Weg 3 CH-8093 Zürich Switzerland