1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
2. Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, PR China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Institute for Advanced Study, Chengdu University, Chengdu 610106, China
5. State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China