CC(Oc1ccccc1)C(=O)NC1C(=O)N2C(C(=O)[O-])C(C)(C)S[C@@H]12.[K+]
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?