COc1cc(/C=C2\Sc3scc(-c4cccc([N+](=O)[O-])c4)[n+]3C2=O)cc(OC)c1OC.[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?