[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][N][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][N]"}, {"from": "gpt", "value": "The molecule is a carbohydrazide obtained by formal condensation between pyridine-4-carboxylic acid and hydrazine. It has a role as an antitubercular agent and a drug allergen. It is functionally related to an isonicotinic acid."}]