5K21:
reference: Pyocyanin degradation by a tautomerizing demethylase inhibits Pseudomonas aeruginosa biofilms., Costa KC, Glasser NR, Conway SJ, Newman DK, Science. 2017 Jan 13;355(6321):170-173. doi: 10.1126/science.aag3180. Epub 2016, Dec 8. PMID: 27940577

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