1. Department of Pharmaceutics, School of Pharmaceutical Science, Capital Medical University, No. 10 Youanmenwai Street, Fengtai, Beijing, 100069, People's Republic of China
2. Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing, 10069, People's Republic of China
3. Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing, 10069, People's Republic of China