[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [O][=C][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][=C][Ring1][#Branch2][I]>>[O][C][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][=C][Ring1][#Branch2][I]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]