[{"from": "human", "value": "Please give me some details about this molecule. [C][N][Branch1][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][=C][C][=C][C][=Branch1][=Branch1][=N+1][Branch1][C][C][C][C][=C][Ring1][=Branch2][S][Ring1][#C]"}, {"from": "gpt", "value": "The molecule is an organic cation that is phenothiazin-5-ium substituted by dimethylamino groups at positions 3 and 7. The chloride salt is the histological dye 'methylene blue'. It is a conjugate acid of a 3,7-bis(dimethylamino)phenothiazine."}]