[{"from": "human", "value": "Describe this molecule. [C][N][S][=Branch1][C][=O][=Branch1][C][=O][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=C][Ring1][#Branch1][C][C][N][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a sulfonamide triptan with vasoconstrictor activity. Sumatriptan selectively binds to and activates serotonin 5-HT1D receptors in the central nervous system (CNS), thereby constricting cerebral blood vessels. This may lead to a relief in pain from vascular headaches. Sumatriptan may also relieve vascular headaches by decreasing the release of vasoactive neuropeptides from perivascular trigeminal axons in the dura mater during a migraine, by reducing extravasation of plasma proteins, and by decreasing the release of other mediators of inflammation from the trigeminal nerve."}]