[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [N][C][=C][Branch1][C][Cl][C][=C][Branch1][C][Cl][C][=C][Ring1][Branch2][N+1][=Branch1][C][=O][O-1]>>[N][C][=C][C][Branch1][C][Cl][=C][C][Branch1][C][Cl][=C][Ring1][Branch2][N]"}, {"from": "gpt", "value": "[Cl].[Cl][Sn][Cl].[K+1].[OH1-1]"}]