[{"from": "human", "value": "Provide 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 appears as odorless colorless or white crystals or white crystalline powder. Taste is slightly sweet at first and then bitter. pH (1% aqueous solution) 5.5-6.5. pH (5% aqueous solution) 6-8. "}]