[1] Guangzhou Univ Chinese Med, Affiliated Clin Hosp 2, Guangzhou 510006, Guangdong, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Mat Med, Dept Nat Med Chem, Shanghai 201203, Peoples R China
[3] Fudan Univ, Sch Pharm, Dept Nat Prod Chem, Shanghai 201203, Peoples R China