COc1ccc([C@H]2C(C(=O)O)=C[C@@H](C(C)(C)C)N2S(=O)(=O)c2ccccc2)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?