1. Department of Biophysical Chemistry Graduate School of Pharmaceutical Science Tohoku University 6-3 Aoba Sendai 980-8578 Japan
2. JST, PRESTO Kawaguchi Saitama 332-0012 Japan
3. Department of Chemistry and Biological Sciences Faculty of Science and Engineering Iwate University Ueda Morioka 020-8551 Japan
4. Soft-Path Science and Engineering Research Center (SPERC) Iwate University Ueda Morioka 020-8551 Japan
5. Central Analytical Center Graduate School of Pharmaceutical Science, Tohoku University 6-3 Aoba Sendai 980-8578 Japan