Ethyl 5,6-bis(2,3-difluorophenyl)picolinate
Ethyl 3,6-bis(2,3-difluorophenyl)picolinate
Ethyl 3,5-bis(2,3-difluorophenyl)picolinate
Ethyl 5,6-bis(2,3-difluorophenyl)nicotinate
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