Ethyl 2,6-bis(2,3,5-trichlorophenyl)nicotinate
Ethyl 2,5-bis(2,3,6-trichlorophenyl)nicotinate
Ethyl 2,5-bis(2,3,5-trichlorophenyl)nicotinate
Ethyl 3,5-bis(2,3,6-trichlorophenyl)isonicotinate
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