CCN1C(=O)CC(C(C)C)N(C2CCCC2)c2nc(Nc3ccc(C(=O)NC4CCN(C)CC4)cc3OC)ncc21
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?