[{"from": "human", "value": "What can you tell me about 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 only found in individuals that have used or taken this drug. It is a highly effective inhibitor of gastric acid secretion used in the therapy of stomach ulcers and Zollinger-Ellison syndrome. The drug inhibits the H(+)-K(+)-ATPase (H(+)-K(+)-exchanging ATPase) in the proton pump of gastric parietal cells. Esomeprazole is a proton pump inhibitor that suppresses gastric acid secretion by specific inhibition of the H<sup>+</sup>/K<sup>+</sup>-ATPase in the gastric parietal cell. By acting specifically on the proton pump, Esomeprazole blocks the final step in acid production, thus reducing gastric acidity."}]