[{"from": "human", "value": "What can you tell me about this molecule? [C][NH1+1][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].[C][=Branch1][#Branch1][=C][/C][=Branch1][C][=O][O-1][\\C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an organoammonium salt consisting of equimolar amounts of ketotifen(1+) and fumarate(1-) ions. A blocker of histamine H1 receptors with a stabilising action on mast cells, it is a non-bronchodilator anti-asthmatic drug. It has a role as an anti-asthmatic drug and a H1-receptor antagonist. It contains a fumarate(1-) and a ketotifen(1+)."}]