1. Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China 210009
2. Pharmacy Experimental Center, China Pharmaceutical University, Nanjing, China 210009
3. Simcere Dongyuan Pharmaceutical Co., Ltd., 10 Tianpu Road, Nanjing, China 211800
4. State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China 210009