[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][O][C][=Branch1][C][=O][C][=C][Branch2][Ring2][C][N][C][=Branch2][Ring1][N][=C][Branch2][Ring1][C][C][Ring1][=Branch1][C][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][Cl][Cl][C][=Branch1][C][=O][O][C][C][C]"}, {"from": "gpt", "value": "The molecule is a long-acting 1,4-dihydropyridine calcium channel blocker (CCB)b. It acts primarily on vascular smooth muscle cells by stabilizing voltage-gated L-type calcium channels in their inactive conformation. By inhibiting the influx of calcium in smooth muscle cells, felodipine prevents calcium-dependent myocyte contraction and vasoconstriction. Felodipine is the most potent CCB in use and is unique in that it exhibits fluorescent activity. In addition to binding to L-type calcium channels, felodipine binds to a number of calcium-binding proteins, exhibits competitive antagonism of the mineralcorticoid receptor, inhibits the activity of calmodulin-dependent cyclic nucleotide phosphodiesterase, and blocks calcium influx through voltage-gated T-type calcium channels. Felodipine is used to treat mild to moderate essential hypertension."}]