[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch2][Ring1][P][S][C][=Branch1][Ring2][=N][Ring1][Branch1][N+1][=N][C][=Branch1][=N][=N][N][Ring1][Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C].[Br-1]"}, {"from": "gpt", "value": "The molecule is the bromide salt of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium. It has a role as a dye and a colorimetric reagent. It contains a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium."}]