1. Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People’s Republic of China
2. State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-Infectives, Helmholtz Institute of Biotechnology, Shandong University, Qingdao 266237, People’s Republic of China