[{"from": "human", "value": "Could you provide a description of this molecule? [C][N][C][=Branch1][#Branch1][=C][N+1][=Branch1][C][=O][O-1][N][C][C][S][C][C][=C][S][C][=Branch1][Ring2][=N][Ring1][Branch1][C][N][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a competitive and reversible histamine H2-receptor antagonist with antacid activity. Nizatidine inhibits the histamine H2-receptors located on the basolateral membrane of the gastric parietal cell, thereby reducing basal and nocturnal gastric acid secretion, resulting in a reduction in gastric volume, acidity, and amount of gastric acid released in response to stimuli."}]