O=[N+]([O-])/C(Cl)=C(\NCCN/C(C(Cl)=C(Cl)Cl)=C(/Cl)[N+](=O)[O-])C(Cl)=C(Cl)Cl
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?