N#Cc1ccc(CSC2=C(c3ccc(Cl)cc3)S/C(=C3\SC(SCc4ccc(C#N)cc4)=C(c4ccc(Cl)cc4)S3)S2)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?