User: I'm looking for the SMILES of a molecule that can be described by:
The molecule is an organic sodium salt resulting from the replacement of the proton from one of the carboxy groups of fumaric acid by a sodium ion. It has a role as a food acidity regulator. It contains a fumarate(1-).
Assistant: This is a molecule that fits your description: O=C([O-])/C=C/C(=O)O.[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#}
sodium;(E)-4-hydroxy-4-oxobut-2-enoate
The molecule is an organic sodium salt resulting from the replacement of the proton from one of the carboxy groups of fumaric acid by a sodium ion. It has a role as a food acidity regulator. It contains a fumarate(1-).