CC(C)(C)c1ccc(C(=O)N2[C@H](COCc3ccccc3)C=CS2(=O)=O)cc1
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?