1 234 5-{2-fluoro-5-[3-(3-hydroxy-2-methoxycarbonyl-phenoxy)-propenyl]-phenyl}-isoxazole-3-carboxylic acid 1.000 2 IX1 5-(3-{3-[3-hydroxy-2-(methoxycarbonyl)phenoxy]propenyl}phenyl)-4-(hydroxymethyl)isoxazole-3-carboxylic acid 0.906