1. Ichikawa Gakuen Ichikawa High School 2‐38‐1, Motokitakata Ichikawa‐shi Chiba 272‐0816 Japan
2. Osaka Toin High School 3‐1‐1, Nakagaito Daito‐shi Osaka 574‐0013 Japan
3. Department of Chemistry Tokyo University of Science 1–3, Kagurazaka Shinjuku Tokyo 162‐8601 Japan