COc1ccc(NC(=O)Nc2cccc3c2O[C@H](CN(C)S(C)(=O)=O)[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. How many bonds in the molecule are rotatable?