N#CC1=C([S-])NC(=O)[C@H]([n+]2ccccc2)[C@H]1c1ccc(Cl)cc1
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?