Cc1ccc(/N=C2\SC(=S)N(CCC[N+](C)(C)C)\C2=N/c2ccc(C)cc2)cc1.[I-]
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?