CC1(C)CC(=O)C2=C(C1)N(c1cccnc1)C(N)=C(C#N)C2c1cccs1
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?