[{"from": "human", "value": "Provide a description of this molecule. [C][=N][N][C][=Branch1][Ring2][=N][Ring1][Branch1][N]"}, {"from": "gpt", "value": "The molecule appears as odorless white crystals or white powder. Bitter taste. Melting point 147-159 \u00b0C. Sublimes undecomposed at reduced pressure. Used as a post-emergence herbicide."}]