CC(C)CC(NC(=O)OC(C)(C)C)C(=O)NC(C(=O)NC(C)C(N)=O)C(C)C
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?