1. Institute of Pharmacy & Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang City, Hunan Province, 421001, P. R. China
2. Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, 28 Western Changshen Road, Hengyang City, Hunan Province, 421001, P. R. China
3. Institute of Chemistry & Chemical Engineering, University of South China, Hengyang City, Hunan Province, 421001, P. R. China