3,6-benzofurandicarboxylic acid, 3a,4,5,7a-tetrahydro-7-hydroxy-2,5-dimethyl-, dimethyl ester InChI=1/C14H18O6/c1-6-5-8-10(14(17)19-4)7(2)20-12(8)11(15)9(6)13(16)18-3/h6,8,12,15H,5H2,1-4H dimethyl 7-hydroxy-2,5-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-3,6-dicarboxylate