1. Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan