CCNC(=O)O[C@@H]1CC[N+]2([O-])CC=C(COC(=O)C(O)(CC)c3ccc(Cl)cc3)C12
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?