COc1ccc(-c2c[n+](-c3ccc(SC(F)F)cc3)c3n2CCC3)cc1OC.[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?