[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a pyrimidine 2',3'-dideoxyribonucleoside."}, {"from": "gpt", "value": "[C][C][C@@H1][Branch1][#Branch1][O][C@@H1][Ring1][Branch1][C][O][N][C][=C][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O]"}]