COc1ccc([N+]2=C3CCCCN3C(O)(c3ccc(OC(F)F)cc3)C2)cc1.[Br-]
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?