1. Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, Department of Structural Molecular Science, The Graduate University for Advanced Studies, Myodaiji, Okazaki 444-8585, Japan, Department of Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan, and Center for Integrative Bioscience, Myodaiji, Okazaki 444-8585, Japan