1. Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
2. School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan
3. Core Laboratory of Plant Metabolomics, Biotechnology Center and Department of Forestry, National Chung Hsing University, Kou Kung Road, Taichung 402, Taiwan
4. Department of Pharmacy, Tajen University, Pintung 907, Taiwan