2AL4:
reference: Mechanism of positive allosteric modulators acting on AMPA receptors., Jin R, Clark S, Weeks AM, Dudman JT, Gouaux E, Partin KM, J Neurosci 2005 Sep 28;25(39):9027-36. PMID: 16192394

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