O=C(c1ccc(S(=O)(=O)N2CCCCC2)cc1)N1CCN(CCN2C(=O)c3cccc4cccc(c34)C2=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?