1. Institute for Molecular Design and Synthesis School of Pharmaceutical Science and Technology Tianjin University 92 Weijin Road, Nankai District Tianjin 300072 P. R. China
2. Chemistry Program New York University Abu Dhabi (NYUAD), Saadiyat Island United Arab Emirates
3. Department of Chemistry Northwestern University 2145 Sheridan Rd. Evanston Illinois USA