2-Furoic acid, 5,5'-thiodimethylene-, cyclic ester with 2,5-furandimethanol 3,10,22,23,24-Pentaoxa-17-thiatetracyclo(17.2.1.1(sup 5,8).1(sup 12,15))tetracosa-5,7,12,14,19,21-hexaene-2,11-dione 73823-25-3 BRN 1668346