[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][C][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Cl]"}, {"from": "gpt", "value": "The molecule is only found in individuals that have used or taken this drug. It is a histamine H1 antagonist used in the treatment of motion sickness, vertigo, and nausea during pregnancy and radiation sickness. Along with its actions as an antagonist at H<sub>1</sub>-receptors, meclizine also possesses anticholinergic, central nervous system depressant, and local anesthetic effects. Meclizine depresses labyrinth excitability and vestibular stimulation and may affect the medullary chemoreceptor trigger zone."}]