COc1ccc(S(=O)(=O)Nc2cccc3c2O[C@H](CN(C)Cc2ccc(Oc4ccccc4)cc2)[C@@H](C)CN([C@H](C)CO)C3=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?