C/C=C/C=C\C=C/C(O)C(C)C(CCC(C)C1OC(=O)C=CC1C)OP(=O)([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?