[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a cytosine analogue and intravenously administered antineoplastic agent used in the therapy of several forms of advanced, pancreatic, lung, breast, ovarian and bladder cancer. Gemcitabine is associated with a high rate of transient serum enzyme elevations during therapy but is a very rare cause of acute, clinically apparent liver injury."}, {"from": "gpt", "value": "[C][=C][N][Branch1][#Branch2][C][=Branch1][C][=O][N][=C][Ring1][#Branch1][N][C@H1][C][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][Branch1][C][F][F]"}]