1. School of Chemistry and Chemical Engineering, Sun Yat-sen University, 135 West Xingang Road, Guangzhou 510275, People's Republic of China
2. CAS Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, People's Republic of China
3. School of Life Sciences, Sun Yat-sen University, 135 West Xingang Road, Guangzhou 510275, People's Republic of China
4. Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, 135 West Xingang Road, Guangzhou 510275, People's Republic of China