1. Institut
für Organische Chemie, Universität Regensburg, Universitätsstrasse
31, 93053 Regensburg, Germany
2. Department
of Chemistry and RECETOX, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
3. Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China