[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][C][=C][C][Branch1][Ring1][C][Br][=C][C][=C][Ring1][Branch2][Br].[C-1][#N]>>[C][C][=C][C][Branch1][Ring2][C][C][#N][=C][C][=C][Ring1][=Branch2][Br]"}, {"from": "gpt", "value": "[Cl][C][Cl].[O].[K+1]"}]