N#CC1=C(SCc2ccc(C#N)cc2)N=C(N)C(c2nc(-c3ccccc3)cs2)C12CCCCC2
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?