Q: Please describe this drug.
 The Compound can be represented with the SMILES O=C([O-])C(=O)[O-].
Result: Derivatives of OXALIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that are derived from the ethanedioic acid structure.
{#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(=O)[O-]
C(=O)(C(=O)[O-])[O-]
oxalate
Please describe this drug.