1H-indene-2-carboxylic acid, 2,3-dihydro-4,5-dimethyl-, methyl ester InChI=1/C13H16O2/c1-8-4-5-10-6-11(13(14)15-3)7-12(10)9(8)2/h4-5,11H,6-7H2,1-3H methyl 4,5-dimethylindane-2-carboxylate