2,6-di-p-carboxyphenyl-4,4'-bipyridine
4,4′-(4,4′-bipyridine-2,6-diyl)dibenzoic acid
4,4'-(4,4'-bipyridine-2,6-diyl)dibenzoic acid
2,6-di(p-carboxyphenyl)-4,4'-bipyridine
4,4'-(4,4'-bipyridine-2,6-diyl) dibenzoic acid
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