User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is an organic sodium salt that is 4-aminoazobenzene-3,4'-disulfonic acid in which the protons of both of the sulfo groups have been replaced by sodium ions. It is used as a biological stain. It was formerly used as a food coloring agent (E105), but its use in food or drinks is now forbidden. It has a role as a histological dye. It contains a 4-aminoazobenzene-3,4'-disulfonate.
Assistant: This is a molecule that fits this description: Nc1ccc(N=Nc2ccc(S(=O)(=O)[O-])cc2)cc1S(=O)(=O)[O-].[Na+].[Na+]
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
Nc1ccc(N=Nc2ccc(S(=O)(=O)[O-])cc2)cc1S(=O)(=O)[O-].[Na+].[Na+]
disodium;2-amino-5-[(4-sulfonatophenyl)diazenyl]benzenesulfonate
The molecule is an organic sodium salt that is 4-aminoazobenzene-3,4'-disulfonic acid in which the protons of both of the sulfo groups have been replaced by sodium ions. It is used as a biological stain. It was formerly used as a food coloring agent (E105), but its use in food or drinks is now forbidden. It has a role as a histological dye. It contains a 4-aminoazobenzene-3,4'-disulfonate.