1. Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, No. 1 Ningde Road, 266071 Qingdao, China
2. Department of Pharmaceutical Analysis, School of Pharmacy, Qingdao University Medical College, No. 1 Ningde Road, 266071 Qingdao, China
3. State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China