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4,4'-pyridine-2,6-diyldibenzoic acid

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4,4'-(1,1,1,3,3,3-Hexafluoropropane-2,2-diyl)bis(benzoic acid);
2,2-Ë«(4-ôÈ»ù±½»ù)Áù·ú±ûÍé

ÆäÖУ¬diyl)bis(benzoic acid) = diyldibenzoic acid


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4,4'-pyridine-2,6-diyldibenzoic acid

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