[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch1][Branch2][C][=C][C][=C][Ring1][=Branch1][N][N].[Cl].[Cl]"}, {"from": "gpt", "value": "The molecule appears as white microcrystalline solid or light brown solid. Starts to darken in color (decompose) at approximately 437 \u00b0F; continues to darken until the melting point (525 \u00b0F) at which temperature it is a very dark brown liquid. "}]