[{"from": "human", "value": "Please give me some details about this molecule. [C][N][Branch1][C][C][C][C][C][Branch1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Cl][C][=C][C][=C][C][=N][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule has also been used in veterinary applications. One of the most widely used of the classical antihistaminics, it generally causes less drowsiness and sedation than promethazine."}]