1. Corporate Research & Development Division, Takasago International Corporation, 4-11, Nishiyawata 1-chome, Hiratsuka City, Kanagawa 254-0073, Japan
2. Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan