1. Natural
Products Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
2. Gachon
Institute of Pharmaceutical Science, Gachon University, Incheon 21936, Republic of Korea
3. College
of Pharmacy, Gachon University, #191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
4. Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea