[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][O][S][=Branch1][C][=O][=Branch1][C][=O][O][C].[C][C][=C][C][=C][Branch1][Ring1][C][#N][C][Branch1][C][O][=C][Ring1][=Branch2]>>[C][O][C][=C][C][Branch1][C][C][=C][C][=C][Ring1][#Branch1][C][#N]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[C][C][O][C][C].[O].[Li+1].[OH1-1]"}]