COc1cc(C2C3=C(CCCC3=O)N(c3ccc(C)cc3)C3=C2C(=O)CCC3)c([N+](=O)[O-])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?