[{"from": "human", "value": "Describe this molecule. [C][=C][N][Branch1][#Branch2][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C@H1][C@@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a nucleoside consisting of uracil and D-ribose and a component of RNA.  Uridine has been studied as a rescue agent to reduce the toxicities associated with 5-fluorouracil (5-FU), thereby allowing the administration of higher doses of 5-FU in chemotherapy regimens. (NCI04)"}]