[{"from": "human", "value": "Describe this molecule. [C][N][Branch1][C][C][C][C][N][Branch1][=Branch2][C][C][=C][C][=C][S][Ring1][Branch1][C][=C][C][=C][C][=N][Ring1][=Branch1].[Cl]"}, {"from": "gpt", "value": "The molecule is a hydrochloride that is the monohydrochloride salt of methapyrilene. It has a role as a H1-receptor antagonist, an anti-allergic agent, a sedative and a carcinogenic agent. It is functionally related to a methapyrilene."}]