LlNDT-2 in complex with compound 17 . are presented with carbon atoms in blue and gold, respectively. Electron density in blue and green corresponds to the 2Fo-Fc and Fo-Fc (omit) maps at levels of 1σ and 3σ. The maps were obtained before the refinement of the ligand atoms in each case. Selected interactions are illustrated by black dashed lines with distances in Å.