Other ; Related Article: Shiyu Zhang, Marie M. Melzer, S. Nermin Sen, Nihan Celebi-Olcum, Timothy H. Warren|2016|Nature Chemistry|8|663|doi:10.1038/nchem.2502 ; Abstract ; An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.