1. Department of Chemistry, Sookmyung Women’s University, Seoul 04310, Korea
2. Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
3. Instrumental Center, National Taiwan Normal University, Taipei 11677, Taiwan
4. Western Seoul Centre, Korea Basic Science Institute, Seoul 03759, Republic of Korea
5. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan