[{"from": "human", "value": "Please give me some details about this molecule. [C][O][C][=C][Branch2][=Branch1][C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=Branch2][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][=N][C][=C][Branch2][Ring2][Ring1][C][=C][Branch2][Ring1][=N][C][=C][Branch1][P][C][=C][Ring1][=Branch1][C][=C][Ring1][#Branch2][S][=Branch1][C][=O][=Branch1][C][=O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][N][O][O][C][N][=N][C][=C][Branch2][Ring2][Ring1][C][=C][Branch2][Ring1][=N][C][=C][Branch1][P][C][=C][Ring1][=Branch1][C][=C][Ring1][#Branch2][S][=Branch1][C][=O][=Branch1][C][=O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][N][O]"}, {"from": "gpt", "value": "The molecule is a ring assembly consisting of two 5-amino-4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-2,7-disulfonic acid units joined by a 4,4'-linkage. The tetrasodium salt is the histological dye 'Pontamine sky blue 5B'. It has a role as a histological dye, a fluorochrome and a carcinogenic agent. It is a member of azobenzenes, a bis(azo) compound, a member of naphthols, an aminonaphthalenesulfonic acid, an aromatic ether and a ring assembly. It is a conjugate acid of a Pontamine sky blue 5B(4-)."}]