3,6,9,12-tetraoxatridec-1-yl methacrylate Methacrylic acid (3,6,9,12-tetraoxatridecan-1-yl) ester Methacrylic acid 2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethyl ester Methacrylic acid 3,6,9,12-tetraoxatridecane-1-yl ester Tetraethylene glycol methyl ether methacrylate 2-Propenoic acid, 2-methyl-, 3,6,9,12-tetraoxatridec-1-yl ester