1 BSV (2z)-4-(5-cyclopropyl-2-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 1.000 2 5EQ (2z)-2-hydroxy-4-(1h-indol-5-yl)-4-oxobut-2-enoic acid 0.842 3 040 4-(2-methylphenyl)-2,4-dioxobutanoic acid 0.833 4 5M2 (~{z})-4-(4-methyl-1~{H}-indol-5-yl)-2-oxidanyl-4-oxidanylidene-but-2-enoic acid 0.800 5 C0V (2z)-2-hydroxy-4-(naphthalen-2-yl)-4-oxobut-2-enoic acid 0.800 6 EHV (2s)-4-(2-bromo-6-methylphenyl)-2-hydroxy-4-oxobutanoic acid 0.789 7 XI7 2-4-dioxo-4-phenylbutanoic acid 0.778 8 Q5M 4-(naphthalen-1-yl)-4-oxobutanoic acid 0.750 9 043 4-(3-bromophenyl)-2,4-dioxobutanoic acid 0.737 10 3EE 4-(2-aminophenyl)-2,4-dioxobutanoic acid 0.737 11 BQ4 (2z)-2-hydroxy-4-(3-hydroxyphenyl)-4-oxobut-2-enoic acid 0.737 12 BVS (2z)-2-hydroxy-4-(4-methylphenyl)-4-oxobut-2-enoic acid 0.737 13 EQA (2z)-4-(2-fluorophenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 14 I92 4-(2-bromophenyl)-2,4-dioxobutanoic acid 0.737 15 ENY (2z)-2-hydroxy-4-(6-methoxynaphthalen-2-yl)-4-oxobut-2-enoic acid 0.727 16 Y9E 2-oxo-4-phenylbutanoic acid 0.722 17 D1Y (2z)-4-(2-chloro-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 18 E9S (2z)-4-(2-bromo-3-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 19 ENG (2z)-4-(2-bromo-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 20 GXD 4-(2,6-dichlorophenyl)-2,4-dioxobutanoic acid 0.700 21 GXG 4-(2,6-difluorophenyl)-2,4-dioxobutanoic acid 0.700 22 OSB 2-succinylbenzoate 0.700