[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an orally-active fluoropyrimidine analogue. Eniluracil inhibits dihydropyrimidine dehydrogenase, the rate-limiting enzyme that catabolizes and inactivates 5-fluorouracil (5-FU) in the liver. Co-administration of ethynyluracil permits the oral administration of 5-FU."}, {"from": "gpt", "value": "[C][#C][C][=C][N][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O]"}]