1. School of Chemistry and Chemistry Engineering and School of Resource, Environmental and Safety Engineering, University of South China, 28 Chang’sheng Road, Hengyang 421001, P. R. China
2. State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
3. School of Environment and Material Engineering, Yantai University, Yantai 264005, P. R. China
4. Computational Biology Center, IBM Thomas J Watson Research Center, Yorktown Heights, New York 10598, United States