Internationally renowned chemist, Dr. K.C. Nicolaou - Harry C. and Olga K. Wiess Professor of Chemistry, Rice University (USA), visited the Chinese National Compound Library (CNCL) in the afternoon of September 19, 2014. Drs. Yang Ye (Deputy Director, Shanghai Institute of Materia Medica, Chinese Academy of Sciences) and Huaiyu Yang (Professor, Shanghai Institute of Materia Medica, Chinese Academy of Sciences) accompanied his visit.