H Eric Xu1, Jin-Song Guo2. 1. Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China. eric.xu@simm.ac.cn. 2. DrugTimes Team, BioSeed (Shanghai) Biotechnology Co., Ltd., Shanghai, 201203, China. jinsong.guo@drugtimes.cn.