1 1D5 (4-{(2r)-2-(4-bromothiophen-2-yl)-3-[(5-chlorothiophen-2-yl)carbonyl]-4-hydroxy-5-oxo-2,5-dihydro-1h-pyrrol-1-yl}phenyl)acetic acid 1.000 2 1DK {4-[(5r)-3-hydroxy-2-oxo-4-(thiophen-2-ylcarbonyl)-5-(2,4,5-trimethylphenyl)-2,5-dihydro-1h-pyrrol-1-yl]phenyl}acetic acid 0.778 3 12G {4-[(2r)-3-(2-chlorobenzoyl)-2-(2-chlorophenyl)-4-hydroxy-5-oxo-2,5-dihydro-1h-pyrrol-1-yl]phenyl}acetic acid 0.730 4 1DL 5-[(2r)-3-benzoyl-2-(4-bromothiophen-2-yl)-4-hydroxy-5-oxo-2,5-dihydro-1h-pyrrol-1-yl]-2-methylbenzoic acid 0.722