1. Hefei National Laboratory for Physical Sciences at Microscale, and School of Life Sciences; University of Science and Technology of China; Hefei Anhui 230027 P.R. China
2. High Magnetic Field Laboratory of CAS; University of Science and Technology of China; Hefei Anhui 230026 China
3. Center of Pharmaceutics; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; Shanghai 201203 China