1,4-Benzenedipropanoicacid, a,a'-diacetyl-b,b'-dioxo- (9CI); p-Benzenedipropionic acid, a,a'-diacetyl-b,b'-dioxo- (8CI); Acetoacetic acid,2,2'-terephthaloyldi-; Butanoic acid, 2,2'-(1,4-phenylenedicarbonyl)bis[3-oxo-
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