1. Center for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
2. Department of Pharmaceutical Organic Chemistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
3. Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan