英文名称:2-Butenedioic acid (2E)-, polymer with 2,2-oxybis(ethanol) and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione; 2-Butenedioic acid (E)-, polymer with 2,2’-oxybis(ethanol) and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione; 2-butenedioic acid (e)-, polymer with 2,2’-oxybis[ethanol] and 3a,4,7,7a-tetrah; 2-butenedioic acid (e)-, polymer with2,2’-oxybis[ethanol] a