CCOc1cc(-c2sc(Nc3ccccc3)n[n+]2-c2ccc(F)cc2)ccc1OC.[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?