[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][C][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a coronary vasodilator which inhibits calcium function in muscle cells in excitation-contraction coupling. It has been proposed as an antiarrhythmic and antianginal agent. Fendiline is non-selective."}]