[{"from": "human", "value": "Describe this molecule. [C][N][C][C][C][=Branch2][Ring1][#Branch1][=C][C][=C][Branch1][=N][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O][S][C][=C][Ring1][=N][C][C][Ring2][Ring1][Ring2].[C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a malate salt resulting from the reaction of equimolar amounts of pizotifen and malic acid. A sedating antihistamine with strong serotonin antagonist and weak antimuscarinic activity, it is used for the treatment of migraine and the prevention of headache attacks during cluster periods. It has a role as a histamine antagonist, a muscarinic antagonist and a serotonergic antagonist. It contains a pizotifen(1+)."}]