[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][O][C][=C][C][Branch1][C][Cl][=C][C][Branch1][Ring1][O][C][=C][Ring1][=Branch2]>>[C][O][C][=C][C][Branch1][C][O][=C][C][Branch1][C][Cl][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][S-1].[Na+1]"}]