[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][Branch2][Ring1][=Branch1][C@H1][Branch1][P][O][C@H1][Ring1][Branch1][N][C][=C][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C][O][O]"}, {"from": "gpt", "value": "The molecule is a nucleoside consisting of uracil and deoxyribose, which can act as an intermediate in thymidine synthesis. Deoxyuridine (dU) is used to indirectly determine if there are sufficient levels of folate and cobalamin in cell or tissue samples."}]