State the $IUPAC$ name of the following complex: Sodium nitroprusside.

(N/A) The chemical formula for Sodium nitroprusside is $Na_{2}[Fe(CN)_{5}(NO)]$.
In this complex,the oxidation state of iron $(Fe)$ is calculated as follows:
$2(+1) + x + 5(-1) + 0 = 0$
$2 + x - 5 = 0$
$x = +3$
However,in the context of the nitroprusside ion $[Fe(CN)_{5}(NO)]^{2-}$,the $NO$ ligand is considered as $NO^{+}$ (nitrosonium ion),which makes the iron center $Fe(II)$.
Thus,the $IUPAC$ name is Sodium pentacyanidonitrosylferrate$(II)$.