2-FLUORO-6-(3-FLUORO-7,8-DIHYDRO-8-OXO-7-(3-PYRIDINYL)-6H-PYRANO(3,2-B:5,4-B')DIPYRIDIN-9-YL)BENZONITRILE
2-fluoro-6-(3-fluoro-7,8-dihydro-8-oxo-7-(3-pyridinyl)-6h-pyrano(3,2-b:5,4-b')dipyridin-9-yl)benzonitrile