CCOC(=O)C(C)(NC(=O)c1ccc(NCc2ccc3nc(NC(=O)c4ccccc4)nc(NC(=O)c4ccccc4)c3c2)cc1)C(=O)OCC
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?