1. Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County 350, Taiwan, ROC
2. Department of Chemistry, National Tsing Hua University, 101, Section 2, Guangfu Road, Hsinchu 300, Taiwan, ROC
3. Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry 605014, India
4. Department of Chemistry, Tunghai University, 181 Taichung Harbor Road Section 3, Taichung 407, Taiwan, ROC
5. National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan, ROC.
6. College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan, ROC
7. Department of Chemistry, Chung Yuan Christian University, Chungli 320, Taiwan, ROC