1-[(4-Cyano-2,2-dimethyl-5-oxo-2,5-dihydrofuran-3-yl)methyl]pyridinium- 5,5-Dimethyl-2-oxo-4-(1lambda~5~-pyridin-1-ylmethyl)-2,5-dihydro-3-furancarbonitrile hydroiodide AIDS-157720 AIDS157720 NSC648368 (IODIDE SALT)