[{"from": "human", "value": "What can you tell me about this molecule? [C][#C][C@][Branch2][Ring1][O][C@H1][Branch2][Ring1][Branch1][O][C@H1][Branch1][Branch1][C@@H1][Ring1][Branch1][O][N][C][=C][C][=Branch1][=Branch1][=N][C][Ring1][=Branch1][=O][N][C][O][O]"}, {"from": "gpt", "value": "The molecule is a new nucleoside antimetabolite. TAS-106 has demonstrated strong antitumor activity without serious toxicity in nude rat models bearing human tumours."}]