Question: Please describe this drug.
Constraint: The Compound can be represented with the SMILES N#C[Hg-2](C#N)(C#N)C#N.[K+].[K+].
Answer: Mercuric potassium cyanide appears as a colorless crystalline solid. Denser than water. Toxic by inhalation and ingestion. Produces toxic oxides of nitrogen during combustion.
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
N#C[Hg-2](C#N)(C#N)C#N.[K+].[K+]
C(#N)[Hg-2](C#N)(C#N)C#N.[K+].[K+]
dipotassium;tetracyanomercury(2-)
Please describe this drug.