1. Laboratory
of Magnetic Resonance Spectroscopy and Imaging, Suzhou Institute of
Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P.R. China
2. College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P.R. China
3. Crystal Pharmatech, Suzhou Industrial Park, Suzhou 215123, P.R. China