COC(=O)c1ccccc1C1=C([N+](=O)[O-])C(c2cccc(Br)c2)C(C#N)=C(N)O1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?