[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][Branch2][Branch1][N][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch2][Ring1][=N][=C][C][=C][C][=Branch2][Ring1][C][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1][C][=C][Ring1][P][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=C][C][=C][C][=C][Ring1][=Branch1][N].[Na+1]"}, {"from": "gpt", "value": "The molecule is an organic sodium salt having 2-(4-{(4-amino-3-methylphenyl)[4-(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl}anilino)benzene-1-sulfonate as the counterion. It is used for staining elastic fibres. It has a role as a histological dye and a fluorochrome. It is an organic sodium salt and an organosulfonate salt. It contains a 2-(4-{(4-amino-3-methylphenyl)[4-(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl}anilino)benzene-1-sulfonate."}]