1. Department of Natural Products Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People’s Republic of China
2. University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. Division of Antitumor Pharmacology and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People’s Republic of China
4. School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China