2I40:
reference: 5-(1H-Benzimidazol-1-yl)-3-alkoxy-2-thiophenecarbonitriles as potent, selective, inhibitors of IKK-epsilon kinase., Bamborough P, Christopher JA, Cutler GJ, Dickson MC, Mellor GW, Morey JV, Patel CB, Shewchuk LM, Bioorg Med Chem Lett. 2006 Sep 22;. PMID: 16997559

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).