1. Department of Chemistry; University of Zürich, Winterthurerstrasse 190; Zürich 8057 Switzerland
2. School of Pharmaceutical Science and Technology; University of Tianjin, 92 Weijin Road; Nankai District Tianjin 3000072 People's Republic of China
3. Service and Support for Science IT; University of Zürich, Winterthurerstrasse 190; Zürich 8057 Switzerland