[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][O][C][=C][C][Branch1][C][Br][=C][Branch1][Ring1][O][C][C][Branch1][Ring1][C][Cl][=C][Ring1][O].[C-1][#N]>>[C][O][C][=C][C][Branch1][C][Br][=C][Branch1][Ring1][O][C][C][Branch1][Ring2][C][C][#N][=C][Ring1][N]"}, {"from": "gpt", "value": "[C][S][Branch1][C][C][=O].[O].[K+1]"}]