CC1(C)CC(Nc2c([N+](=O)[O-])ccc3c2=NC2(CCCCC2)[N+]=3[O-])CC(C)(C)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?