CC1CC2(C)C(=CC1=O)CCC1C2C(O)CC2(C)C1CCC2(O)C(=O)CO
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?