1. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, Republic of Korea
2. Laboratories of Marine New Drugs, REDONE SEOUL, Seoul, Republic of Korea
3. Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
4. Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA