High Magnetic Field Laboratory;
Chinese Academy of Sciences;
School of Life Sciences;
University of Science and Technology of China;
School of Biological and Medical Engineering;
Hefei University of Technology;
Hybio Pharmaceutical Co.;
Ltd.;
Linaclotide; Guanylyl; cyclase; Protein; chemical; synthesis; Fmoc; solid; phase; peptide; synthesis; Racemic; crystallization;