1. Department of Life Science Informatics,
B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry,
Rheinische Friedrich-Wilhelms-Universität, Dahlmannstr. 2,
D-53113 Bonn, Germany.
2. State Key Laboratory of Chemical
Resource Engineering, Department of Pharmaceutical Engineering, P.O.
Box 53, Beijing University of Chemical Technology, 15 BeiSanHuan East
Road, Beijing 100029, People’s Republic of China