1. Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610065, Sichuan, P. R. China
2. School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
3. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, P. R. China
4. Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
5. Laboratory of Ethnopharmacology, Tissue-orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, P. R. China