C=C(CCC(C)C1CCC2C3=C(C(=O)CC21C)C1(C)CCC(=O)[C@@H](C)C1CC3=O)C(C)C(=O)O
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?