6-Chloro-5-(2,3-dichlorophenyl)nicotinaldehyde
6-Chloro-2-(2,3-dichlorophenyl)nicotinaldehyde
5-Chloro-6-(3,4-dichlorophenyl)nicotinaldehyde
5-Chloro-6-(2,3-dichlorophenyl)nicotinaldehyde
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