10,13,16,19,22,27,28-Heptaoxa-3-thiatricyclo(22.2.1.1(sup 5,8))octacosa-5,7,24,26-tetraene-9,23-dione 2-Furoic acid, 5,5'-thiodimethylenedi-, cyclic ester with 2,2'-oxybis(ethyleneoxy)diethanol 71349-36-5 BRN 1671374