[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][N][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][Ring1][=Branch1][O][C][C][C][S@][=Branch1][C][=O][C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][O][C]"}, {"from": "gpt", "value": "The molecule is a Proton Pump Inhibitor. The mechanism of action of esomeprazole is as a Proton Pump Inhibitor, and Cytochrome P450 2C19 Inhibitor."}]