CC(C)(C)c1cc(NC(=O)Nc2cccc3ccccc23)n(-c2cccc(C(=O)NCC#N)c2)n1
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?