COc1ccc(-c2noc(-c3ccc(N4CCN(C)CC4)c([N+](=O)[O-])c3)n2)cc1OC
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?