1 0FN 1,3-dioxo-2,3-dihydro-1h-indene-2-carbonitrile 1.000 2 V92 4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carbonitrile 0.800 3 1ON 2,3-dihydro-1h-inden-1-one 0.769 4 A1ABR (3r)-4-oxo-3,4-dihydro-2h-1-benzopyran-3-carbonitrile 0.733 5 5V4 (1~{R},2~{R})-2,3-dihydro-1~{H}-indene-1,2-diol 0.714