1H-pyrazole-4-carboxylic acid, 5-hydroxy-3-(2-hydroxyethoxy)-, methyl ester InChI=1/C7H10N2O5/c1-13-7(12)4-5(11)8-9-6(4)14-3-2-10/h10H,2-3H2,1H3,(H2,8,9,11 methyl 5-hydroxy-3-(2-hydroxyethoxy)-1H-pyrazole-4-carboxylate