Affiliation: | 1. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences &2. Peking Union Medical College, Beijing 100050, China;3. huyoucai@ymail.com;5. Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, USA;6. Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA |