1. Laboratory of Bio-organic Chemistry; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho Fuchu-shi Tokyo 183-8509 Japan
2. Environmental Science Research Laboratory; Central Research Institute of Electric Power Industry; 1646 Abiko Abiko-shi Chiba 270-1194 Japan
3. CERES Inc.; 1-4-5 midori Abiko-shi Chiba 270-1153 Japan