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