1. Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
2. Department of Chemistry, National Cheng-Kung University, Tainan 701, Taiwan
3. Department of Applied Chemistry, National Chiayi University, Chiayi 600, Taiwan
4. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
5. Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan