CCCCNC(=O)O[C@H]1C[C@@H]2CCN3C(=O)CCC[C@@H]([C@H]23)[C@H]1Cc1ccccc1
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?