Question: Please describe this drug.
Constraint: The Chemical has the SMILES O=C([O-])[C@@H]1O[C@H](O)[C@H](O)[C@H](O)[C@H]1O.[Na+].
Answer: Salts and esters of ALGINIC ACID that are used as HYDROGELS; DENTAL IMPRESSION MATERIALS, and as absorbent materials for surgical dressings (BANDAGES, HYDROCOLLOID). They are also used to manufacture MICROSPHERES and NANOPARTICLES for DIAGNOSTIC REAGENT KITS and DRUG DELIVERY SYSTEMS.
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=C([O-])[C@@H]1O[C@H](O)[C@H](O)[C@H](O)[C@H]1O.[Na+]
[C@H]1([C@H]([C@@H](O[C@@H]([C@@H]1O)O)C(=O)[O-])O)O.[Na+]
sodium;(2R,3R,4R,5R,6S)-3,4,5,6-tetrahydroxyoxane-2-carboxylate
Please describe this drug.