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