1 9MV 4-({5-bromo-2-oxo-1'-[(thiophen-2-yl)sulfonyl]spiro[indole-3,4'-piperidin]-1(2h)-yl}methyl)benzoic acid 1.000 2 9LV 4-({5-bromo-1'-[(2-chlorophenyl)sulfonyl]-2-oxospiro[indole-3,4'-piperidin]-1(2h)-yl}methyl)benzoic acid 0.892 3 9NG 5-bromo-1-{[4-(1h-tetrazol-5-yl)phenyl]methyl}-1'-(thiophene-2-sulfonyl)spiro[indole-3,4'-piperidin]-2(1h)-one 0.795