1. Department of Molecular Chemistry and Biochemistry Doshisha University, Kyotanabe Kyoto 610-0321 Japan
2. Department of Life Science University of Hyogo Kouto, 2-1, Ako-gun Kamigori-cho Hyogo 678-1297 Japan
3. Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819-0395 Japan
4. Application Laboratory Rigaku Corporation, Akishima Tokyo 196-8666 Japan