1. Guangxi Key Laboratory of Drug Discovery and Optimization Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation Pharmacy School of Guilin Medical University Guilin 541199 People's Republic of China
2. State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
3. Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science of Yulin Normal University Yulin 537000 People's Republic of China