[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=C][Branch1][#Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][Cl][C][=Branch1][=Branch2][=C][C][C][N][C][C][Ring1][=Branch1][C][=C][Ring2][Ring1][C][C][=C][C][=N][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a second generation, tricyclic antihistamine that which has a selective and peripheral H1-antagonist action. It is the active descarboethoxy metabolite of loratidine (a second generation histamine). Desloratidine has a long-lasting effect and does not cause drowsiness because it does not readily enter the central nervous system."}]