C[C@@H](CO)N1C[C@@H](C)[C@H](CN(C)S(=O)(=O)c2ccccc2)OCc2cnnn2CCCC1=O
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?