6CEP:
reference: Small molecule cores demonstrate non-competitive inhibition of lactate dehydrogenase., Andrews BA, Dyer RB, Medchemcomm. 2018 Jul 13;9(8):1369-1376. doi: 10.1039/c8md00309b. eCollection, 2018 Aug 1. PMID: 30151092

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