C=CCN1C(=O)C2C(C(=O)NC3CCCC3)C3C=CC2(O3)C1C(=O)NC1CCCC1
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?