[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][I].[O][C][C][=C][C][=C][Branch1][C][Br][S][Ring1][=Branch1]>>[C][O][C][C][=C][C][=C][Branch1][C][Br][S][Ring1][=Branch1]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[Cl].[H-1].[Na+1]"}]