COc1ccccc1S(=O)(=O)N(C)C[C@H]1Oc2cc(Br)ccc2S(=O)(=O)N([C@@H](C)CO)C[C@H]1C
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?