[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][N][C][=Branch1][C][=S][N][C][Ring1][#Branch1][=O]"}, {"from": "gpt", "value": "The molecule is a nucleobase analogue that is uracil in which the oxo group at C-2 is replaced by a thioxo group. It has a role as an antithyroid drug and a metabolite. It is a thiocarbonyl compound and a nucleobase analogue. It is functionally related to a uracil."}]