[{"from": "human", "value": "Provide a brief overview of this molecule. [C][N][C][C][C][C][Branch1][Branch1][C][C][Ring1][#Branch1][N][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][Ring2][=N][Ring1][O][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Cl]"}, {"from": "gpt", "value": "The molecule is an antihistamine available as an intranasal spray for the treatment of allergic and vasomotor rhinitis and as an ophthalmic solution for the treatment of allergic conjunctivitis. It is a racemic mixture, though there is no noted difference in pharmacologic activity between enantiomers, and was first granted FDA approval in 1996. Azelastine is also available in combination with fluticasone propionate as a nasal spray marketed under the trade name Dymista\u2122, which is indicated for the symptomatic treatment of seasonal allergic rhinitis in patients 6 years of age and older."}]