[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is used extensively for erectile dysfunction and less commonly for pulmonary hypertension. Sildenafil has been associated with rare instances of clinically apparent liver injury."}, {"from": "gpt", "value": "[C][C][C][C][=N][N][Branch2][Ring2][S][C][=C][Ring1][Branch1][N][=C][Branch1][=Branch1][N][C][Ring1][=Branch1][=O][C][=C][Branch2][Ring1][O][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][O][C][C][C]"}]