CCCC1C2=C(C(=O)OC2=O)C2C(CC)CC3=C(C(=O)OC3=O)C12
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?