[{"from": "human", "value": "Please give me some details about this molecule. [C][N][C][C][C][=Branch2][Ring1][#Branch2][=C][C][=C][Branch1][S][C][=Branch1][C][=O][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][N][S][C][=C][Ring1][=C][C][C][Ring2][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is a Histamine-1 Receptor Inhibitor. The mechanism of action of ketotifen is as a Histamine H1 Receptor Antagonist."}]