[{"from": "human", "value": "Provide a description of this molecule. [C][C@@H1][C][C][=Branch1][C][=O][N][N][=C][Ring1][#Branch1][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][N][=C][Branch1][Ring1][C][#N][C][#N]"}, {"from": "gpt", "value": "The molecule is a hydrazone, a pyridazinone and a nitrile. It has a role as a vasodilator agent, an EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor, a cardiotonic drug and an anti-arrhythmia drug."}]