Cc1cc(=O)oc2cc(NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC3CCCCC3)NC(=O)OCC3c4ccccc4-c4ccccc43)ccc12
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?