A compound contains K=42.39%, Fe=15.23% ...

A compound contains `K=42.39%, Fe=15.23%` and `C=19.44% N=22.8260 %`. The molecular mass of the compound is 368. Find the molecular formula of the compound

`K_3[Fe(CN)_6]`

`K[Fe(CN)_4]`

`K_4[Fe(CN)_6]`

`K_2[Fe(CN)_4]`

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