Ethyl 6-fluoro-5-(perchlorophenyl)nicotinate
Ethyl 6-fluoro-2-(perchlorophenyl)nicotinate
Ethyl 6-chloro-2-(3,4,5-trichlorophenyl)nicotinate
Ethyl 6-chloro-2-(2,4,6-trichlorophenyl)nicotinate
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