2-(methacryloyloxy)ethyl 1,3-dioxo-1,3-dihydro-2-benzofuran-5-carboxylate 5-isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, 2-[(2-methyl-1-oxo-2-propenyl)oxy]ethyl ester InChI=1/C15H12O7/c1-8(2)12(16)20-5-6-21-13(17)9-3-4-10-11(7-9)15(19)22-14(10)18/h3-4,7H,1,5-6H2,2H