O=C1CCC[C@@H]2C[C@@]3(C[C@@H]4CCN1[C@@H]42)Nc1cc([N+](=O)[O-])ccc1N=C3NC1CCCCC1
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?