1. Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
2. Department of Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
3. Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
4. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea