1. Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
2. Laboratory for Safety Assessment and ADME, Pharmaceuticals Research Center, Asahi Kasei Pharma Corporation, 632-1 Mifuku, Izunokuni, Shizuoka 410-2321, Japan
3. Department of Chemistry, Nippon Medical School, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180−0023, Japan