3UPI:
reference: Synthesis of New 4,5-Dihydrofuranoindoles and Their Evaluation as HCV NS5B Polymerase Inhibitors., Velazquez F, Venkatraman S, Lesburg CA, Duca J, Rosenblum SB, Kozlowski JA, Njoroge FG, Org Lett. 2012 Jan 20;14(2):556-9. Epub 2012 Jan 5. PMID: 22220815

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