COC(=O)[C@@H](Cc1ccccc1)[N@]1O[C@]12CCCC[C@@H]2NC(=O)OC(C)(C)C
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?