Affiliation: | 1. Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, 541004, Guilin, P. R. China 3. Youjiang Medical University for Nationalities, 533000, Baise, P. R. China 2. Guangxi Traditional Chinese Medical University, 530001, Nanning, P. R. China
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