| 4A4L: reference: 5-(2-Amino-pyrimidin-4-yl)-1H-pyrrole and 2-(2-amino-pyrimidin-4-yl)-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one derivatives as new classes of selective and orally available Polo-like kinase 1 inhibitors., Caruso M, Valsasina B, Ballinari D, Bertrand J, Brasca MG, Caldarelli M, Cappella P, Fiorentini F, Gianellini LM, Scolaro A, Beria I, Bioorg Med Chem Lett. 2012 Jan 1;22(1):96-101. Epub 2011 Nov 23. PMID: 22154349 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).