1. Department of Chemistry, Centre of Theoretical and Computational Physics, The University of Hong Kong, Hong Kong
2. Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
3. Department of Chemistry, Hong Kong University of Science and Technology, Hong Kong
4. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Center for Theoretical Chemical Physics, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China
5. Department of Computer Science, The University of Hong Kong, Hong Kong