1. State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences Peking University Beijing China
2. Beijing Institute of Clinical Pharmacy, Beijing Friendship Hospital Capital Medical University Beijing China
3. Department of Physics and Astronomy Uppsala University Uppsala Sweden
4. State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany Chinese Academy of Sciences Kunming China