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