CCOC(=O)C1=C[C@@H](C2CCCC2)N(S(=O)(=O)c2ccc([N+](=O)[O-])cc2)[C@H]1c1ccccc1
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?