[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch1][Branch1][=N][O][Ring1][Branch1][C][=Branch1][C][=O][N][N][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a hydralazine and monoamine oxidase (MAO) inhibitor with antidepressant activity. Isocarboxazid blocks the breakdown (oxidative deamination) of biogenic amines by inhibiting MAO, thereby increasing the concentrations of norepinephrine and 5-hydroxytrytamine (5-HT) at central aminergic receptors. These neurotransmitters are involved in sustaining mood and emotions. The down-regulation of central beta-adrenergic and serotonergic receptors by chronic inhibition of MAO may also contribute to the antidepressant effects seen by isocarboxazid. (NCI05)"}]