1,4-benzenedicarboxylic acid, 2,5-dibutoxy-, diethyl ester InChI=1/C20H30O6/c1-5-9-11-25-17-13-16(20(22)24-8-4)18(26-12-10-6-2)14-15(17)19(21)23-7-3/h13-14H,5-12H2,1-4H diethyl 2,5-dibutoxyterephthalate