1D8F:
reference: Design and synthesis of piperazine-based matrix metalloproteinase inhibitors., Cheng M, De B, Pikul S, Almstead NG, Natchus MG, Anastasio MV, McPhail SJ, Snider CE, Taiwo YO, Chen L, Dunaway CM, Gu F, Dowty ME, Mieling GE, Janusz MJ, Wang-Weigand S, J Med Chem 2000 Feb 10;43(3):369-80. PMID: 10669564

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