[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][N][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch1][C][Ring1][#Branch1][=O][C][C][=C][Branch2][Ring1][Ring1][C@H1][Ring1][Branch2][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][O][Ring1][#Branch1][N][C][=C][C][=C][C][=C][Ring2][Ring1][Ring1][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a Phosphodiesterase 5 Inhibitor. The mechanism of action of tadalafil is as a Phosphodiesterase 5 Inhibitor."}]