COC(=O)C1(C)C=CC(=O)C2(C)C1C(O)C1OC3CC(c4ccoc4)C(C)=C3C1(C)C2CC(=O)[O-].[Na+]
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?