[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][C][=C][C][Branch1][C][Br][=C][C][Branch1][Ring1][C][Br][=C][Ring1][=Branch2].[C-1][#N]>>[C][C][=C][C][Branch1][C][Br][=C][C][Branch1][Ring2][C][C][#N][=C][Ring1][#Branch2]"}, {"from": "gpt", "value": "[C][C][O].[K+1]"}]