1. Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
2. Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, Republic of Korea
3. Department of Chemistry, Dongguk University, Seoul 04620, Republic of Korea
4. Research Institute of Pharmaceutical Science, College of Pharmacy, Kyungpook National University, Daegu 41566, Republic of Korea
5. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea