CCC(O)(C(=O)OCC1=CC[N+]2([O-])CC[C@@H](OC(=O)Nc3ccccc3)C12)c1ccc(Cl)cc1
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?