1H-indole-6-carboxylic acid, 1-methyl-, methyl ester InChI=1/C11H11NO2/c1-12-6-5-8-3-4-9(7-10(8)12)11(13)14-2/h3-7H,1-2H methyl 1-methyl-1H-indole-6-carboxylate