[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a purine analogue and antineoplastic agent used primarily in the therapy of hairy cell leukemia. Cladribine is typically given intravenously daily for 7 days, usually as a single course, and has not been associated with serum enzyme elevations during therapy or with instances of clinically apparent acute liver injury with jaundice."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring1][=C][C@H1][Branch2][Ring1][Branch2][O][C@H1][Ring1][Branch1][N][C][=N][C][=C][Branch1][N][N][=C][Branch1][#Branch1][N][=C][Ring1][=Branch1][Ring1][=Branch2][Cl][N][C][O][O]"}]