1H-pyrrole-2-carboxylic acid, 5-ethyl-3-methyl-, ethyl ester InChI=1/C10H15NO2/c1-4-8-6-7(3)9(11-8)10(12)13-5-2/h6,11H,4-5H2,1-3H ethyl 5-ethyl-3-methyl-1H-pyrrole-2-carboxylate