5EHU:
reference: Azidoethoxyphenylalanine as a Vibrational Reporter and Click Chemistry Partner in Proteins., Tookmanian EM, Phillips-Piro CM, Fenlon EE, Brewer SH, Chemistry. 2015 Nov 26. doi: 10.1002/chem.201503908. PMID: 26608683

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