N=C1/C(=C\c2ccc(-c3cc(Cl)cc(Cl)c3)o2)C(=O)N=C2SC=C(c3ccccc3)N12
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?