[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][/C][=Branch1][#Branch2][=C][\\C][N][C][C][C][C][Ring1][Branch1][/C][=C][C][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][/C][=C][/C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a triprolidine analog antihistamine indicated for the treatment of allergies and hay fever.  As an H1 receptor antagonist, it functions by blocking the action of histamine at this receptor thereby preventing the symptoms associated with histamine release such as pruritis, vasodilation, hypotension, edema, bronchoconstriction, and tachycardia.   Acrivastine is currently available in combination with pseudoephedrine as the FDA-approved product Semprex-D."}]