1. Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Jinan, Shandong, P.R. China
2. Department of Physics, Chemistry, and Pharmacy, University of Southern Denmark, DK-5230 Odense M., Denmark
3. Department of Molecular Medicine, University of Padova, via Gabelli 63, 35121 Padova, Italy
4. Institute of Poultry Science, Shandong Academy of Agricultural Sciences, 1, Jiaoxiao Road, Jinan, Shandong 250023, P. R. China
5. The Second Hospital of Shandong University, no. 247 Beiyuan Avenue, Jinan 250033, China
6. Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden