[{"from": "human", "value": "Please give me some details about this molecule. [C][C][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=Branch1][P][=C][C][=C][C][=Branch1][Ring2][=N][C][C][C][=Branch1][Ring2][=C][Ring1][=Branch2][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][C].[Cl]"}, {"from": "gpt", "value": "The molecule is a hydrochloride obtained by combining Hoffman's violet free base with one molar equivalent of hydrogen chloride. A specific stain for animal chromosomes. It has a role as a fluorochrome and a histological dye."}]