InChI=1/C10H14O2/c1-7-5-8(9(11)12-2)6-10(7)3-4-10/h8H,1,3-6H2,2H methyl 7-methylenespiro[2.4]heptane-5-carboxylate spiro[2.4]heptane-5-carboxylic acid, 7-methylene-, methyl ester