C=CCN1/C(=C2\SC(=S)N(c3ccc(C)cc3)C2=O)Sc2c1ncn(C)c2=O
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?