COC(=O)[C@]12CC[C@H]3CC[C@H]([C@H]31)[C@H](c1ccccc1)N2
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?