1. Key Laboratory of Marine Drugs Chinese Ministry of Education, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
2. Marine Biomedical Research Institute of Qiangdao, Qingdao 266237, China
3. Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China