1 6FQ 2,4-dioxo-10-[3-(1h-tetrazol-5-yl)phenyl]-2,3,4,10-tetrahydropyrimido[4,5-B]quinoline-8-carbonitrile 1.000 2 6FV 10-(4-hydroxyphenyl)-2,4-dioxo-2,3,4,10-tetrahydropyrimido[4,5-B]quinoline-8-carbonitrile 0.800