2OLE:
reference: Synthesis, biological evaluation and structural determination of beta-aminoacyl-containing cyclic hydrazine derivatives as dipeptidyl peptidase IV (DPP-IV) inhibitors., Ahn JH, Shin MS, Jun MA, Jung SH, Kang SK, Kim KR, Rhee SD, Kang NS, Kim SY, Sohn SK, Kim SG, Jin MS, Lee JO, Cheon HG, Kim SS, Bioorg Med Chem Lett. 2007 May 1;17(9):2622-8. Epub 2007 Feb 8. PMID: 17331715

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