Methyl 2-(3,4-dichlorophenyl)-4-methylnicotinate
Methyl 3-(3,4-dichlorophenyl)-2-methylisonicotinate
Methyl 2-(3,4-dichlorophenyl)-6-methylisonicotinate
Methyl 2-(3,4-dichlorophenyl)-5-methylisonicotinate
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