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