CC(C)C1=CC23CCC4C(C)(C(=O)[O-])CCCC4(C)C2CC1C1C(=O)N(c2ccccc2)C(=O)C13.[Na+]
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?