[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C]>>[C][C][C][C][C][C][C][C][C][C][O]"}, {"from": "gpt", "value": "[C][C][O][C][C][O][C][C][O].[C][C][=C][C][=C][C][=C][Ring1][=Branch1][C].[O][=S][=Branch1][C][=O][Branch1][C][O][O].[BH4-1].[Na+1]"}]