Cc1cccc(N2CCN(C(=O)C3CCN(S(=O)(=O)c4cccc5cccnc45)CC3)CC2C)c1
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?