4-Hydroxybenzo[h]quinoline-3-carboxylicacid;4-Hydroxybenzo[h]quinolone-3-carboxylic acid;4-oxo-1,4-dihydrobenzo[h]quinoline-3-carboxylic acid;benzo[h]quinoline-3-carboxylic acid, 1,4-dihydro-4-oxo-;
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