1. School for Radiological
and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation
Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Jiangsu 215123, China
2. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, P. R. China
3. Computational Biology Center, IBM Thomas J. Watson Research Center, Yorktown
Heights, New York 10598, United States
4. Department of Chemistry, Columbia University, New York, New York 10027, United States