4LTW:
reference: X-ray crystal structure of the ancestral 3-ketosteroid receptor-progesterone-mifepristone complex shows mifepristone bound at the coactivator binding interface., Colucci JK, Ortlund EA, PLoS One. 2013 Nov 19;8(11):e80761. doi: 10.1371/journal.pone.0080761. PMID: 24260475

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