1. Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama 227-0033, Japan
2. Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building 5, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, PR China
3. Lead Exploration Unit, Drug Discovery Initiative, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan