[建] tetraethylene glycol dimethacrylate
sì gān chún èr jiǎ jī bǐng xī suān zhǐ ㄙˋ ㄍㄢ ㄔㄨㄣˊ ㄦˋ ㄐㄧㄚˇ ㄐㄧ ㄅㄧㄥˇ ㄒㄧ ㄙㄨㄢ ㄓˇ