1. School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
2. Lab of Computational Chemistry and Drug DesignState Key Laboratory of Chemical OncogenomicsPeking University Shenzhen Graduate School Shenzhen 518055 P. R. China
3. Department of ChemistryCollege of ScienceChina University of Petroleum (East China) Qingdao 266580 P. R. China